Home/Products/Fiber Cable Management/Joint Closure/FOSCIT4 Inline Type Fiber Optic Splice Closure (FOSC)

FOSCIT4 Inline Type Fiber Optic Splice Closure (FOSC)

$17
★★★★★
* Ref. Price

Description

FOSCIT4 Inline Type Fiber Optic Splice Closure (FOSC) is mechanical sealing for reusable application.

Specification:

ModelFOSCIT4
TypeInline type
Number of Inlet/Outlet ports4 ports
Cable Diameter4 ports×23mm
Maximum CapacityBunchy: 96 fibers;Ribbon: 96 fibers
Capacity per Splice TrayBunchy: single layer: 12 fibers; dual layers: 24 fibers
Quantity of Splice Tray4pcs
Body MaterialPC
Sealing MaterialThermoplastic rubber
Assembling methodAerial, direct buried, pipelined, wall mounting, manhole
Dimension370(L)×178(W)×106(H)mm
Net Weight1.6~2.1KG
Temperature-40℃~65℃

Main Components:

ItemNameUsageQuantity
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. 4pcs
4PlugTo seal empty ports4pcs

Standard Accessories:

ItemNameUsageQuantity
5Fiber Splice Protective SleevesTo protect fiber splicesSame as capacity
6Nylon TieTo fix buffer tubes with fibers inside8pcs
7Insulation TapeTo enlarge cable diameter for fixation1 roll
8Sealing TapeTo enlarge cable diameter for sealing grommet1 roll
9Hanging HookFor aerial installation2pcs
10Grounding WireTo connect with grounding device1pc
11Abrasive ClothTo polish fiber optic cable1pc
12Labelling PaperTo label fibers1 set
13M6 WrenchTo screw bolts of housing1pc
14Hose ClampTo fix fiber cables4pcs
15Steady 4pcs
16RingTo seal cables at8 sets

Optional Accessories:

ItemNameUsageQuantity
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

FAQ

Q1: What is the maximum fiber capacity of the FOSCIT4 splice closure?

A: The maximum capacity is 96 fibers for both bunchy and ribbon configurations. Orderable capacity options include 24, 48, 72, and 96 Cores.

Q2: How many ports does the FOSCIT4 feature, and what cable diameter is supported?

A: It features 4 inlet/outlet ports that accommodate cable diameters up to 23mm per port.

Q3: What are the physical dimensions, net weight, and operating temperature range?

A: The closure dimensions are 370(L) × 178(W) × 106(H) mm, with a net weight ranging from 1.6 kg to 2.1 kg. It operates reliably across environmental temperatures between -40℃ and 65℃.

Q4: What sealing system is used, and is this closure reusable?

A: The FOSCIT4 utilizes a mechanical sealing structure with thermoplastic rubber, making it suitable for reusable applications.

Q5: What installation methods are supported for the FOSCIT4?

A: The FOSCIT4 supports aerial, direct buried, pipelined, wall mounting, and manhole deployments.

Q6: What are the specifications for the housing body material and splice trays?

A: Built with a durable PC (Polycarbonate) body, the closure holds up to 4 splice trays. Each tray accommodates 12 fibers (single layer) or 24 fibers (dual layers) for bunchy setups.

Customer Reviews

4.8 / 5.0 ★★★★★ Based on 48 customer reviews
FIONA O'DONNELL
February 18, 2026

Integrating FirstFiber's FOSCIT4 inline splice closure across our regional distribution network simplified field splicing and maintenance. The mechanical sealing system with thermoplastic rubber grommets lets technicians open and seal the closure quickly without needing heat shrink torches or specialized heating tools. Featuring 4 entry ports that accommodate heavy-duty cables up to 23 mm in diameter, it provides plenty of routing flexibility for inline trunk cables and distribution drops. Constructed from high-impact Polycarbonate (PC) and operating reliably between -40°C and +65°C, it maintains an airtight seal across aerial pole-mounts, underground pipelines, and manhole installations. Supporting up to 96 fibers across 4 dual-layer splice trays (24 fibers per tray), it is a dependable, reusable enclosure.

SÖREN LINDQVIST
November 22, 2025

At a reference price starting at just $17 USD, FirstFiber's FOSCIT4 offers exceptional commercial value for B2B fiber optic network deployments. With compact dimensions of 370 (L) × 178 (W) × 106 (H) mm and a net weight ranging from 1.6 kg to 2.1 kg, the enclosure is lightweight and easy for field crews to maneuver during aerial hanger and wall-mount installations. The product arrives as a complete turnkey kit supplied with standard accessories, including an M6 wrench, 4 hose clamps, 4 steadies, 8 cable sealing rings, 2 aerial hanging hooks, nylon ties, insulation tape, sealing tape, grounding wire, abrasive cloth, and protective sleeves. Supporting up to 96 bunchy or ribbon fibers, it provides a cost-effective, scalable solution for expanding optical networks.

MATEO GARCIA
May 14, 2026

We standardized on the FOSCIT4 for direct-buried, pipeline, and manhole fiber splicing contracts due to its rigid Polycarbonate housing body. The mechanical cover and base bolts create a tight, pressure-resistant seal that withstands heavy soil compression and water immersion. We opted to equip our units with the optional pressure testing valve to perform air integrity checks prior to backfilling underground trenches. Selecting from orderable capacities ranging from 24 Cores up to 96 Cores allowed our engineering team to order exact tray configurations for various distribution nodes.

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