Inline Type 4 Port Mechanical Sealing FOSC(288C) - Fiber Optic Cabling Management

Inline Type 4 Port Mechanical Sealing FOSC(288C)

Inline Type 4 Port Mechanical Sealing FOSC(288B)
Inline Type 4 Port Mechanical Sealing FOSC(48A)

LW-FOSC-IM288C-4 Inline Type 4 Port Mechanical Sealing

Fiber Optic Splice Closure (FOSC)


LW-FOSC-IM288C-4 48 cores/tray, 24 Slots/tray, 2cores/Slot (Maximum)



Fiber Optic Joint Closure, also named Fiber Optic Splice Closure, is used to connect and protect two or more fiber optic cables in Fiber to the home network. Fiber Optic Joint Closure is an essential fiber optic part in fiber optic cabling construction. Fiber Optic Joint Closure’s quality directly influences the quality and lifespan of fiber optic networks.

Fiber Optic Joint Closure could be installed in aerial, pole mounting, direct buried, and duct mounting.

According to the shapes of Fiber Optic Joint Closure, there are inline Fiber Optic Joint Closure (horizontal Fiber Optic Joint Closure) and dome Fiber Optic Joint Closure (vertical Fiber Optic Joint Closure).

According to the functions of Fiber Optic Joint Closure, there are Fiber Optic Joint Closure for fiber fusion and FTTH Fiber Optic Splitter Joint Closure for housing fiber optic splitters in FTTH Passive Optical Network.

LW-FOSC-IM288C-4 Inline Type Fiber Optic Joint Closure (FOSC) is mechanical sealing for reusable applications.


  • Easy access to installation, maintenance, and future expansions.
  • Excellent sealing against water ingress and harsh environment
  • Hinged splice trays for easy expansion without disturbing spliced fibers.
  • Compatible with standard normal fiber cable types


TypeInline type
Number of Inlet/Outlet ports4 ports
Cable Diameter4 ports×23mm
Maximum CapacityBunchy: 288 fibers;

Ribbon: 864 fibers

Capacity per Splice TrayBunchy: single layer: 24 fibers; dual layers: 48 fibers;

Ribbon: 6pcs

Quantity of Splice Tray6pcs
Body MaterialPC
Sealing MaterialThermoplastic rubber
Assembling methodAerial, direct buried, pipelined, wall mounting, manhole
Net Weight3.0~4.6KG



Main Components:
1Housing (Bottom)To protect splices of fiber optic cables1pc
2Housing (Cover)To protect splices of fiber optic cables1pc
3Splice TrayTo fix Fiber Splice Protective SleevesMax. 6pcs
4Sealing GrommetTo seal bottom and cover1 set
5RingTo seal cables at8 sets
6PlugTo seal empty ports4pcs
7BoltTo fix bottom and cover1 set


Standard Accessories:
8Fiber Splice Protective SleevesTo protect fiber splicesSame as capacity
9Nylon TieTo fix buffer tubes with fibers inside8pcs
10Insulation TapeTo enlarge cable diameter for fixation1 roll
11Sealing TapeTo enlarge cable diameter for sealing grommet1 roll
12Hanging HookFor aerial installation2pcs
13Grounding WireTo connect with a grounding device1pc
14Abrasive ClothTo polish fiber optic cable1pc
15Labelling PaperTo label fibers1 set
16 M8 WrenchTo screw bolts of housing 1pc
17M6 WrenchTo screw small bolts of housing 1pc
18M10 WrenchTo screw nuts for strength member1pc
19Hose ClampTo fix fiber cables4pcs
21User ManualTo instruct installation1pc



Optional Accessories:
1ValveTo perform pressure and sealing testing1pc
2Grounding DeviceTo derive metallic components of fiber cable1 set
3Buffer TubeTo protect fibers and be fixed on splice traysspecified
4DesiccantTo desiccate air in FOSC after sealing1 bag


Ordering Information:
NameFOSC: Fiber Optic Joint Closure
Shape and SealingIM-288C: Inline type mechanical sealing 288 Cores
Cable Port4=4 Ports
Fiber Optic Splice Tray24: 24-core

48: 48-core

Number of Splice Trays1: 1 tray

2: 2 trays

6: 6 trays

ValveV: Valve included
Grounding DeviceG: Grounding device included

For example: LW-FOSC-IM288C-4-241-VG