2178 Series Brochure Datasheet by 3M

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iber ent
Flexible Fiber
Management
Solutions
3M Fiber Optic Splice Closure 2178 Family
Communication Markets Division
2
More flexibility
for your complex
fiber optic network
A full line of closures and accessories designed to
protect fiber optic facilities. The 3M Fiber Optic
Splice Closure 2178 family has earned its reputation
for reliable protection of fiber optic facilities.
Now, the 2178 family includes many models and
configurations for more flexibility to help meet the
complex needs of today’s fiber optic networks.
Growing technologies require
growing solutions.
You want to build reliable FTTP networks faster
and cheaper. The expanded 3M Fiber Optic Splice
Closure 2178 family can help you meet these needs
for most applications (including aerial, buried,
underground, vault and building entrance) and
ffff
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or dielectric).
3
A complete product
family
The 3M Fiber Optic Splice Closure
2178 family includes seven distinct
models (XSB, XLB, S, SL, LS, LL
fl
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fl
growing networks.
Future-proof solutions
The 2178 family has scalability and
fl
system based on splicing capacity
and the number of cable entry ports.
It also allows you to defer your
investment until it is required.
Easily re-enterable
designs

easy, while bolted halves provide
greater security. With the 2178 family,
fi
add or remove cables in most outside
plant and inside plant environments.
1
2
3
Fully assembled 3M Fiber

with two LBT cables
3M Fiber Optic Splice
Closure 2178 Family
Multiple solutions for evolving networks.
fi
5
4Flexible environment
applications
The 3M Fiber Optic Splice Closure
ff
in nearly any application including
aerial (pole and strand) mount,
ffi
pedestal and handhole. It can
also accommodate most splicing
methods (mechanical and
fusion) as well as inline and butt
fi
Network flexibility
3M designs a variety of sizes,
fl
flfi
fi
splice closures can be used in
almost every segment of the
network. A single product family
meets a range of needs.
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4
A flexible solution for
different applications
(Available in flame retardant)
3M Fiber Optic Splice Closure 2178-XSB 3M Fiber
Optic Splice Closure 2178-S
3M Fiber Optic Splice Closure 2178-XLB 3M Fiber
Optic Splice Closure 2178-SL
3M Fiber Optic Splice Closure 2178-LS 3M Fiber
Optic Splice Closure 2178-LL
3M Fiber Optic Splice Closure 2178-XL 3M Fiber Optic Splice Closure 2178-LS
3M Fiber Optic Splice Closure 2178-SL 3M Fiber Optic Splice Closure 2178-LL
3M Fiber Optic Splice Closure 2178-S
3M Fiber Optic Splice Closure 2178FR Family3M Fiber Optic Splice Closure 2178-XLB
3M Fiber Optic Splice Closure 2178-XSB
3M Fiber Optic Splice Closure 2178-LS
3M Fiber Optic Splice Closure 2178-SL
3M Fiber Optic Splice Closure 2178-S
Long Haul Metropolitan
Network
Metro Core Metro Edge
Local Access
Network
Central
Office
Central
Office
Video
Head End
FTTP
Hybrid
Fiber Coax
FDH
HFC
Node
DSL
DSLAM
Local Loop
Network Premises
Single Family Unit
Multi-Dwelling Unit
Single Tenant Unit
Multi-Tenant Unit
Enterprise
5
Aerial Fiber Plant
Premises
Buried/
Underground
Fiber Plant
2178
2178
2178
Central
Offi ce
(Available in flame retardant)
3M Fiber Optic Splice Closure 2178-XSB 3M Fiber Optic Splice Closure 2178-S
3M Fiber Optic Splice Closure 2178-XLB 3M Fiber Optic Splice Closure 2178-SL
3M Fiber Optic Splice Closure 2178-LS 3M Fiber Optic Splice Closure 2178-LL
3M Fiber Optic Splice Closure 2178-XL 3M Fiber Optic Splice Closure 2178-LS
3M Fiber Optic Splice Closure 2178-SL 3M Fiber Optic Splice Closure 2178-LL
3M Fiber Optic Splice Closure 2178-S
3M Fiber Optic Splice Closure 2178FR Family3M Fiber Optic Splice Closure 2178-XLB
3M Fiber Optic Splice Closure 2178-XSB
3M Fiber Optic Splice Closure 2178-LS
3M Fiber Optic Splice Closure 2178-SL
3M Fiber Optic Splice Closure 2178-S
Long Haul Metropolitan
Network
Metro Core Metro Edge
Local Access
Network
Central
Office
Central
Office
Video
Head End
FTTP
Hybrid
Fiber Coax
FDH
HFC
Node
DSL
DSLAM
Local Loop
Network Premises
Single Family Unit
Multi-Dwelling Unit
Single Tenant Unit
Multi-Tenant Unit
Enterprise
6
Flexibility that can
save you time and
money.
The 3M Fiber Optic Splice
Closure 2178 family provides
fl
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deployments. Products in

fl
common accessories allow you
to maintain a reduced inventory,
which can save time and money.
Smart design makes
your job easier.
All 2178 closures are designed
to be easy to install, easy to

reusable gasket helps make

system with almost no training
necessary.
The 2178 family accommodates
fi
(inline or butt).
3M
3M Fiber Optic Splice Closure 2178 Series
3M Fiber Optic Splice Closure 2178 Family
Features and Benefits
Full range of sizes Fits your specific application
No special tools required
(standard torque wrench)

Constructed of a highly
chemical-resistant material
Can be deployed in most

and aerial
Gasket seals 
Unique strength member clamp
assembly
Prevents cable sheath movement with
temperature changes
Spacious fiber management areas All closures provide separate areas for
routing, protecting, and expressing buffer
tubes and ribbon fibers
Flexible drop or cable addition Multiport grommets provide entry for
drops or cables
Flame-retardant materials All 2178 closures are available in a

even more application choices

More advantages with
a complete solution
Features to meet network demands.
The closures accommodate cables of varying sizes and provide
fl Cable

fl
fi
swap out splice holders, and mix and match splice types (fusion and
mechanical). The same tray can be used for discrete or mass splicing.
All of these features combine to give you an enhanced ability
ff
data and video.
7
3M
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3M
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3M
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3M
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3M
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3M
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The 3Mfi
fiff
accommodate varying splice counts, ideal for wide varieties of applications.
Reliable protection for
your application
8
Product
Number
Size
in. (mm)
(L x W x H)
Splice
Configuration
Cable
Entry
Ports
Maximum
Splice
Capacity
2178-XSB 
 Butt 3 Butt 48 Single Fusion
288 Mass Fusion
2178-XLB 
 Butt 3 Butt 
432 Mass Fusion
2178-S 

Inline
Butt
4 Inline
2 Butt

288 Mass Fusion
2178-SL 

Inline
Butt
4 Inline
2 Butt

288 Mass Fusion
2178-LS 

Inline
Butt
4 Inline
2 Butt
288 Single Fusion

2178-LL 

Inline
Butt
4 Inline
2 Butt
288 Single Fusion

2178-XL 

Inline
Butt
8 Inline
4 Butt

1728 Mass Fusion
3M Fiber Optic Splice Closure 2178
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9
Size
(L x W x H )
Splice
Application
Max Cable Entry Ports
Main Branch
2178-XSB
 Butt 2 Butt 1 Butt
2178-XSB with one 2181-XB
 Butt 2 Butt 4 Butt
2178-XLB
 Butt 2 Butt 1 Butt
2178-XLB with one 2181-XB
 Butt 2 Butt 4 Butt
2178-S
 Butt or Inline 2 Butt, 2 Inline 
2178-S with one 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-S with two 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-S with three 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-SL
 Butt or Inline 2 Butt, 2 Inline 
2178-SL with one 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-SL with two 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
Grow as you go with multiple entry
port configurations
3M Fiber Optic Splice Closure 2178
IIIIIUOOIII
10
Size
(L x W x H )
Splice
Application
Max Cable Entry Ports
Main Branch
2178-SL with three 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LS with one 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LS with two 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LS with three 2181-LS
 Butt or Inline 2 Butt, 4 Inline 
2178-LL
 Butt or Inline 2 Butt, 2 Inline 
2178-LL with one 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LL with two 2181-LS
 Butt or Inline 2 Butt, 2 Inline 
2178-LL with three 2181-LS
 Butt or Inline 2 Butt, 4 Inline 
2178-XL
 Butt or Inline 2 Butt, 2 Inline 
2178-xl with one 2181-XL
 Butt or Inline 2 Butt, 2 Inline 
3M Fiber Optic Splice Closure 2178
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11
Flexible fiber management
One of the greatest advantages of the 3Mfl
fffi
Product
Number Description Splices
Accommodated
Splice Capacity
Per Tray
2178
Closure
2522*
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
24
12

S, LS,
LL, SL
2522-24-SF
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion
 24 S, LS,
LL, SL
2523*
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
48
24
144
S, LS, LL,
SL, XL
2523-48-SF
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion
 48 S, LS, LL,
SL, XL
2524*
Stackable, hinged
tray lid, side entry,
fixed splice holders
Single Fusion

Single Mechanical (Fibrlok)
24
24
S, LS, LL,
SL, XL
2524-FT
Stackable, hinged
tray lid,
side entry, fixed
splice holders
Single Fusion
 24 S, LS, LL,
SL, XL
2527
Stackable, fiber
entry/exit both ends
of tray, positionable
splice holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
24
12
144
S, LS, LL,
SL, XL
2527-48-SF
Stackable, fiber
entry/exit both ends
of tray, positionable
splice holders
Single Fusion
 48 S, LS, LL,
SL, XL
2532
Stackable, fiber
entry/exit both ends
of tray, positionable
splice holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
24
12
144
XLB
XSB
2539-12-SF Hinged, fixed
spliced holders
Single Fusion
 12 XLB
XSB
2540-12-SF/36-MF Hinged, fixed
spliced holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
12
12

XLB
XSB
2543
Stackable, fiber entry/
exit both ends of tray,
positionable splice
holders
Single Fusion

Single Mechanical (Fibrlok)
Mass Fusion
24
12
144
S, LS, LL,
SL, XL
* Requires additional kit
3M Fiber Optic Splice Trays
12
Product Configuration Cable Entry Ports per Splicing Configuration Splice Capacity per Splice Tray
Butt Inline 2527 2522 2523 2524 2532 2539-12-Sf 2540-12-Sf/36-Mf 2543
Main Branch Main Branch Size Sf Sf Mf Sf Mf Sf Mf Sf Sf Mf Sf Sf Mf Sf Mf
Trays 24 48 144 Trays 24 144 Trays 48 144 Trays 24 Trays 24 144 Trays 12 Trays 12 36 Trays 24 144
2178-S or SL 22 2  2 48  288 2 48 288 2  288 2 48 2 48 288
2178-S or SL w/ one 2181-LS 22 2  5   5  4  4 5 
2178-S or SL w/ one 2181-LS 2 2 2   2 48  288 2 48 288 2  288 2 48 2 48 288
2178-S or SL w/ two 2181-LS 22 2  8 384  8  288  144 8 
2178-S or SL w/ two 2181-LS 2 2 2   5   5  4  4 5 
2178-S or SL w/ two 2181-LS 2 4 2   2 48  288 2 48 288 2  288 2 48 2 48 288
2178-S or SL w/ three 2181-LS 2 2 2   8 384  8  288  144 8 
2178-S or SL w/ three 2181-LS 2 4 2   5   5  5  5 5 
2178-S or SL w/ three 2181-LS 22 14  2 48  288 2 48 288 2  288 2 48 2 48 288
2178-LS 22 2  7   144  288  144 7 
2178-LS w/ one 2181-LS 2 2 2   7   144  288  144 7 
2178-LS w/ two 2181-LS 2 4 2   7   144  288  144 7 
2178-LS w/ two 2181-LS 2 2 2        432     
2178-LS w/ three 2181-LS 2 4 2         432     
2178-LS w/ three 2181-LS 22 14  7   144  288  144 7 
2178-LL 22 2  7   144  288  144 7 
2178-LL w/ one 2181-LS 2 2 2   7   144  288  144 7 
2178-LL w/ two 2181-LS 2 4 2   7   144  288  144 7 
2178-LL w/ two 2181-LS 2 2 2        432     
2178-LL w/ three 2181-LS 2 4 2         432     
2178-LL w/ three 2181-LS 22 14  7   144  288  144 7 
2178-XSB 2 1 
 2 48 288 72 4 48 144
2178 XSB w/ one 2181 XB 4 2 
 2 48 288 72 4 48 144
2178 XLB 2 1 
 4 432
2178 XLB w/one 2181 4 2 
 4 432
2178-XL 2 2 2 
 12 288  1728 12 288 1728 12  1728 12 288 12 288 1728
2178-XL w/ one 2181-XL 22 14 
 12 288  1728 12 288 1728 12  1728 12 288 12 288 1728
Select the right combination for
your specific application
fi
fi
particular application.
Specifications — 3M Fiber Optic Splice Closure 2178
1
2
13
Product Configuration Cable Entry Ports per Splicing Configuration Splice Capacity per Splice Tray
Butt Inline 2527 2522 2523 2524 2532 2539-12-Sf 2540-12-Sf/36-Mf 2543
Main Branch Main Branch Size Sf Sf Mf Sf Mf Sf Mf Sf Sf Mf Sf Sf Mf Sf Mf
Trays 24 48 144 Trays 24 144 Trays 48 144 Trays 24 Trays 24 144 Trays 12 Trays 12 36 Trays 24 144
2178-S or SL 22 2  2 48  288 2 48 288 2  288 2 48         2 48 288
2178-S or SL w/ one 2181-LS 22 2  5   5  4  4         5 
2178-S or SL w/ one 2181-LS 2 2 2  2 48  288 2 48 288 2 288 2 48         2 48 288
2178-S or SL w/ two 2181-LS 22 2  8 384  8  288   144         8 
2178-S or SL w/ two 2181-LS 2 2 2  5   5  4  4         5 
2178-S or SL w/ two 2181-LS 2 4 2   2 48  288 2 48 288 2  288 2 48         2 48 288
2178-S or SL w/ three 2181-LS 2 2 2  8 384  8  288   144         8 
2178-S or SL w/ three 2181-LS 2 4 2   5   5  5  5         5 
2178-S or SL w/ three 2181-LS 22 14  2 48  288 2 48 288 2  288 2 48         2 48 288
2178-LS 22 2  7   144  288   144         7 
2178-LS w/ one 2181-LS 2 2 2  7   144  288   144         7 
2178-LS w/ two 2181-LS 2 4 2   7   144  288   144         7 
2178-LS w/ two 2181-LS 2 2 2          432             
2178-LS w/ three 2181-LS 2 4 2           432             
2178-LS w/ three 2181-LS 22 14  7   144  288   144         7 
2178-LL 22 2  7   144  288   144         7 
2178-LL w/ one 2181-LS 2 2 2  7   144  288   144         7 
2178-LL w/ two 2181-LS 2 4 2   7   144  288   144         7 
2178-LL w/ two 2181-LS 2 2 2          432             
2178-LL w/ three 2181-LS 2 4 2           432             
2178-LL w/ three 2181-LS 22 14  7   144  288   144         7 
2178-XSB 2 1 
            2 48 288 72 4 48 144   
2178 XSB w/ one 2181 XB 4 2 
            2 48 288 72 4 48 144   
2178 XLB 2 1 
            4 432      
2178 XLB w/one 2181 4 2 
            4 432      
2178-XL 2 2 2 
 12 288  1728 12 288 1728 12  1728 12 288         12 288 1728
2178-XL w/ one 2181-XL 22 14 
 12 288  1728 12 288 1728 12  1728 12 288         12 288 1728
 fi 
2. Determine # of branch ports 4. Select appropriate splice capacity
How to use chart:
Then you would need the 3M Fiber Optic Splice Closure 2178-S with
one 3M Cable Addition Kit 2181 and 3M Splice Tray 2523.
Configuration Example If your application requires:
Butt splice configuration Fixed-position splice holder
2 branch ports 96 single fusion splices
1 3
3
24
4
-«Nfl ., a ‘,‘ OE“;
14
Splice Trays
Product Number/
Packaging Info Description
2170



Fiber Optic Splice Sleeve, 3.0 mm x 60 mm
Transparent plastic tube and stainless steel rod designed to help prevent stress and protect
fusion fiber optic splices in field and factory operations.
2171



Fiber Optic Splice Sleeve, 2.4 mm x 60 mm
Transparent plastic tube and stainless steel rod designed to help prevent stress and protect
fusion fiber optic splices in field and factory operations.
2519



Cable Fanout Kit
Transitions cable buffer tubes or single tube to fiber tube.
2519-X



Cable Fanout Expander Kit
Transitions one fiber tube to two fiber tubes.
2520



Fiber Transition Tubing, 1 ft.

2520-3FT



Fiber Transition Tubing, 3 ft.

2520-100FT



Fiber Transition Tubing, 100 ft.

2518



Fiber Transition Tubing Kit for Loose Buffer Tube
The 3M Fiber Transition Tubing Kit 2518 is a 2 MM fiber transition tube kit for loose buffer
tube cables. It is used to transition the fibers from the splice closure slack storage area to
the splice tray.
2521-F



Fusion Splice Insert, 2 Pack
Holds 12 single fusion splices in each insert, used in 3M Fiber Splice Organizer Trays
2538/2522/2523


2521-FL



3M
Fibrlok
Splice Insert, 2 Pack
Holds six Fibrlok or mass fusion splices in each insert, used in 2538/2522/2523 trays.
Accommodates single ceramic rod 12 fiber mass fusion sleeves or double ceramic rod

2521-R-12RF-MF-A



12RF Mass Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds six 3M Fibrlok Splices or Mass Fusion Splices,
used in 2532 and 2543 trays. Accommodates single ceramic rod 12 fiber mass sleeves or

2521-R-2.4MM-SF-A



2.4MM Single Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds twelve single fusion splices in each insert, used in

Optic Splice Sleeve 2171 or equivalent).
3M Fiber Optic Splice Closure 2178 Accessories
‘! {m r v f. 4' 4'
15
Splice Trays (continued)
Product Number/
Packaging Info Description
2521-R-3.0MM-SF-A



3.0MM Single Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds twelve single fusion splices in each insert, used in


2521-MF



3M Fibrlok Multi-Fiber Splice Insert, 2 Pack

2522/2523.
2521-RF



Ribbon Fusion Splice Insert, 2 Pack
Holds five ribbon fusion splices in each insert, used in 2522/2523 trays. Accommodates dou
ble ceramic rod 8 to 12 fiber mass fusion sleeves.
2521-F-A



Single Fusion Splice Insert with Adhesive, 2 Pack
Holds 12 single fusion splices in each insert, used in 3M Fiber Splice Organizer Trays

or equivalent).
2521-FL-A



Ribbon Fusion Splice Insert with Adhesive, 2 Pack
Holds six Fibrlok or mass fusion splices in each insert, used in 3M Fiber Splice Organizer
Tray 2527/2522. Accommodates single ceramic rod 12 fiber mass fusion sleeves or double

2522



Small Fiber Splice Organizer Tray
Holds two 3M Splice Inserts 2521 family.*
The 2522 tray stores and protects single and mass, mechanical and fusion splices. The 2521
family splice inserts are easily added to secure splices into the trays. Fibers are routed into the
trays using 3M
*Splice inserts must be ordered separately.
2522-24-SF



Small Fiber Splice Organizer Tray, 24SF
Holds 24 single fusion splices.

2523



Large Fiber Splice Organizer Tray
Holds four 2521 family splice inserts.*
The 2523 tray stores and protects discrete and mass, mechanical and fusion splices. The
3M Fiber Splice Organizer Tray 2521 inserts are easily added to secure splices into the

the fibers.
*Splice inserts must be ordered separately.
2523-48-SF



Large Fiber Splice Organizer Tray, 48SF
Holds 48 single fusion splices.

3M Fiber Optic Splice Closure 2178 Accessories
16
Splice Trays (continued)
Product Number/
Packaging Info Description
2524



3M Fibrlok Splice Organizer Tray
Holds 24 3M Fibrlok Splices and eight buffer tubes.
The 3M Fibrlok Splice Organizer Tray 2524 holds 24 Fibrlok splices. The 2524 tray can be
adapted for fusion splice storage using the 2524F tray insert. Buffer tubes are secured with
channel snaps so that cable ties are not required. The fibers all enter the tray in one corner
eliminating the need for figure 8’s in the fiber. An important design feature of these stackable

sembly of the trays above or below — and without kinking buffer tubes.
2524-F



Fusion Splice Insert
Adapts the 2524 tray for fusion splices.

or equivalent).
2524-FT



Fusion Splice Organizer Tray
Holds 24 single fusion splices.
Holds up to 24 fusion splices. Buffer tubes are secured with channel snaps so that cable ties
are not required. The fibers all enter the tray in one corner eliminating the need for figure 8’s

on each tray. Individual trays may be accessed without disassembly of the trays above or
below — and without kinking buffer tubes.

2524-MF



Multi-Fiber Splice Organizer Tray
Holds three 3M Fibrlok
2527



Fiber Splice Organizer Tray
The 3M Fiber Splice Organizer Tray 2527 accommodates up to 24 single fusion or 144 mass
splices and has entry from all corners. It maintains the minimum bend radius of fiber. The tray
has a clear cover and splice holders included.

2527-48-SF



Fiber Splice Organizer Tray
The 2527 tray accommodates up to 48 single fusion splices and has entry from all corners.
It maintains the minimum bend radius of fiber. The tray has a clear cover and splice holders
included.

2532



Fiber Splice Organizer Tray
Tray is stackable and accommodates 24 single and 72 mass fusion splices.

or equivalent).
2539-12-SF



Fiber Optic Splice Tray with 12 Single Fusion Splices


2540-12-SF/36-MF



Fiber Optic Splice Tray with 12 Single/36 Mass Fusion



2543-S-144-MF



Fiber Optic Splice Tray Tube Entry, 144 Mass Fusion
Accommodates up to 144 mass fusion splices and has entry from all corners for standard
transition or LBT tubes.
3M Fiber Optic Splice Closure 2178 Accessories
17
3M Fiber Optic Splice Closure 2178 Accessories
Splice Trays (continued)
Product Number/
Packaging Info Description
2543-S-24-SF-2.4MM



Fiber Optic Splice Tray Tube Entry, 24SF 2.4MM
Accommodates up to 24 single fusion splices and has entry from all corners. The
single fusion splice inserts accommodate the 3M Fiber Optic Splice Sleeve 2171 or

2543-S-24-SF-3.0MM



Fiber Optic Splice Tray Tube Entry, 24SF 3.0MM
Accommodates up to 24 single fusion splices and has entry from all corners. The
single fusion splice inserts accommodate the 3M

2543-T-144-MF



Fiber Optic Splice Tray 2520 Tube Entry, 144MF
Accommodates 144 mass fusion splices. Fibers are routed into the trays using

all corners.
2543-U-24SF-3MM/144MF



Fiber Optic Splice Tray 2520 Tube Entry 24SF 3MM/144MF


of the tray. Standard transition tube or LBT securing is available on the other end of
the tray.
2527-1X32PLC-01-SF2-AA



1X32 PLC 2527 Splitter Tray Input Splicing


18
Expansion
Product Number/
Packaging Info Description
2172



Strength Member Clamp for Fiber Cable

2178-LS/GSKT

Min. O

Gasket Kit for 2178-L/S Family
Replaceable gasket kit.
2178-XLB-TOP



Fiber Closure 2178 XLB Top
XLB Closure Top
2178-XSB-1.4B
each
 each

Cable Branch Port Kit for 2178-XSB and XLB

2178-4PGA



4-Port Grommet
Compatible with most flat drop cable available. For use with all 2178 models.

2178-6PGA



6-Port Grommet



2181-B



Double Adapter Bolt Kit
Contains bolts for installation of two 3M
2181-C



Triple Adapter Bolt Kit

2181-LS



Cable Addition Kit
Contains gasket and materials for installing additional cables. For use with

2181-LS/FR



Cable Addition Kit, Flame Retardant
Contains gasket and materials for installing additional cables and is flame retardant.

2181-XL/CAK



Cable Addition Kit for 2178-XL
Contains gasket and materials for installing additional cables. For use with

2181-XL/FR-CAK



Cable Addition Kit for 2178-XL

retardant closure.
2181-XB



Cable Addition Kit for 2178-XB


2181-XB/FR



Cable Addition Kit for 2178-XSB/FR & 2178-XLB/FR

addition of 3 cable ports. Contains three cable entry hardware kits.
3M Fiber Optic Splice Closure 2178 Accessories
0?; a J, ,‘ ’3'
19
3M Fiber Optic Splice Closure 2178 Accessories
Expansion (continued)
Product Number/
Packaging Info Description
2178-LS-CSB-SMC-BRKT



Cable Strain Relief Bracket

of closures.
2178-1.0-PORT-CRPX



Cable Grommet for Corning RPX Cable

2178-XL/XSB-FR-3PG-0.52



Flame Retardant 3-Port 0.52" Grommet

closures.

2178-XL/XSB-FR-2PG-0.60



Flame Retardant 2-Port 0.60" Grommet

closures.

Grounding
Product Number/
Packaging Info Description
2178-EGI



External Ground Isolation Kit




25T-BBE6



Bond Braid

4460-D/FO



3M
Scotchlok
Shield Bond Connector Assembly
Provides grounding and strength member clamp for armored fiber cables.
20
3M Fiber Optic Splice Closure 2178 Accessories
Mounting Hardware
Product Number/
Packaging Info Description
2183-UHB



Universal Aerial Hanger Bracket Kit

kit also accommodates the 2178 splice closure with one or two 3M Cable Addition Kits

bracket assemblies.
2184



Adjustable Aerial Hanger Bracket Kit


2184-LL



Aerial Offset Hanger Bracket Kit Lightlinker
3M Fiber
Splice Closure System LL Series and the 3M
2197



Aerial Hanger Bracket Kit
Contains hardware for aerial installation with hinged cover.

2178 splice closure with one or two 2181 cable addition kits. It provides additional

12 nuts, two flexible hinges, two “L” brackets, two bonding/hanger brackets and two
bolts with washers.
2198



Wall Mount Bracket

2199



Wall Mount Bracket

AC-HB4



Aerial Offset Hanger Bracket, 4.0"
For overlashing application.
2178-S/LS-OPGW



OPGW Cable Bracket

21
3M Fiber Optic Splice Closure 2178 Accessories
General
Product Number/
Packaging Info Description
2178-XB/XL-T-INSERT-G



Plastic Threaded Inserts

2178-L/S-T-INSERT



Stainless Steel Threaded Inserts

2178-L/S-T-INSERT-G



Plastic Threaded Inserts

2178-L/S-375-BOLTS



Cable Addition Replacement Bolts

2178-L/S-248-BOLTS



Standard Closure Bolts

4415



Cable Cleaning Kit
Provides all the necessary materials for cleaning the filling compound from filled copper

5005-KIT



Reflective Lettering System Kit


2178-2T-LL-CLTK



Tool Kit with Torque Wrench
Kit includes sockets, extension and torque wrench.
22
FEATURES 2178-XSB 2178-XLB 2178-S 2178-S4 2178-S6 2178-SL 2178-LS 2178-LS4 2178-LS6 2178-LL 2178-LL4 2178-XL
CABLE ENTRY PORTS & SIZE
INLINE   4 8 12 4 4 8 12 4 8 8
BUTT 3 3 2 4 2242 4 4
SIZE -
INCHES (MM)





(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)


SPLICE CAPACITY (MAXIMUM) AND TRAY INFORMATION
SINGLE FUSION 72      288 288 288 288 288 
MASS FUSION 288 432 288 288 288 288      1728
TRAYS
*Most Popular
2532*


2532*


2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2527
2543
BONDING & GROUNDING
# OF GROUND LUGS       
DIMENSIONS (INCHES)
LENGTH            
WIDTH            
HEIGHT            
KEY ACCESSORIES
CABLE PORT OR SPLICE CAPACITY
EXPANSION
  

























GROMMETS 


























MOUNTING HARDWARE
AERIAL STRAND MOUNT 2184 2184     
MANHOLE       
HANDHOLE       
AERIAL POLE MOUNT       
WALL MOUNT       
FLAME/FIRE RETARDANT SOLUTION (UL LISTED*)
PRODUCT 









na 












The 2181 Cable Addition Kits can be used to increase splice capacity or port capacity.
Maximum splice capacity varies per the splice tray selected for each closure.
3M Fiber Optic Splice Closure 2178 Configurations
23
FEATURES 2178-XSB 2178-XLB 2178-S 2178-S4 2178-S6 2178-SL 2178-LS 2178-LS4 2178-LS6 2178-LL 2178-LL4 2178-XL
CABLE ENTRY PORTS & SIZE
INLINE 4 8 12 4 4 8 12 4 8 8
BUTT 3 3 2 4 2242 4 4
SIZE -
INCHES (MM)





(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)

(25 mm)


SPLICE CAPACITY (MAXIMUM) AND TRAY INFORMATION
SINGLE FUSION 72      288 288 288 288 288 
MASS FUSION 288 432 288 288 288 288      1728
TRAYS
*Most Popular
2532*


2532*


2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2527
2543
BONDING & GROUNDING
# OF GROUND LUGS       
DIMENSIONS (INCHES)
LENGTH            
WIDTH            
HEIGHT            
KEY ACCESSORIES
CABLE PORT OR SPLICE CAPACITY
EXPANSION
  

























GROMMETS 


























MOUNTING HARDWARE
AERIAL STRAND MOUNT 2184 2184     
MANHOLE       
HANDHOLE       
AERIAL POLE MOUNT       
WALL MOUNT       
FLAME/FIRE RETARDANT SOLUTION (UL LISTED*)
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