Inline horizontal fiber optic splice closure
Inline splice closure open showing splice trays and cable ports
Fiber Optic Splice Closure

InlineFiber Optic Splice Closure — Horizontal IP68 12-144 Core

Horizontal inline-type fiber optic splice closure supporting 12 to 144 cores with IP68 waterproof protection. Multiple cable entry ports on both ends for straight-through and branch splicing. Mechanical seal for easy re-entry. Designed for underground duct, direct burial, and aerial applications.

Fiber Capacity12 / 24 / 48 / 96 / 144 cores
Closure TypeInline (Horizontal)
Cable PortsMultiple ports, both ends
Splice Trays1-6 (24 fibers each)
Sealing MethodMechanical seal, re-enterable
Protection RatingIP68
Specifications

Technical Specifications

Fiber Capacity
12 / 24 / 48 / 96 / 144 cores
Closure Type
Inline (Horizontal)
Cable Ports
Multiple ports, both ends
Splice Trays
1-6 (24 fibers each)
Sealing Method
Mechanical seal, re-enterable
Protection Rating
IP68
Material
PP + PC, UV resistant
Dimensions
Varies by capacity
Mounting
Underground duct, direct burial, aerial
Operating Temperature
-40°C to +65°C
Standards
IEC 61073 · Telcordia GR-771 · YD/T 1599
Key Features

Engineered For Performance

Horizontal Inline Design

Low-profile horizontal form factor fits easily in underground ducts, trenches, and tight spaces where vertical dome closures cannot be accommodated.

Multi-Port Cable Entry

Cable entry ports on both ends of the closure support straight-through splicing and branch configurations, providing flexible network topology options.

Mechanical Re-Enterable Seal

Tool-free mechanical seal allows repeated opening and resealing for future fiber additions, repairs, or network upgrades without replacement gaskets.

Scalable 12 to 144 Cores

Available in capacities from 12 to 144 cores, scaling from small drop-cable joints to medium-count distribution splicing with the same closure platform.

Typical Applications

01

Underground Duct Splicing

Fiber cable splicing in underground duct systems and manholes where the horizontal form factor matches the duct orientation and limited headroom.

02

Direct Burial Installations

Sealed fiber splice protection for directly buried cable joints in roadside, campus, and rural fiber deployments requiring long-term moisture resistance.

03

FTTH Branch Splicing

Inline splicing at FTTH branch points where feeder cables are joined to distribution cables using straight-through or branch port configurations.

Interested in this Inline Splice Closure?

Tell us your quantity, cable length, and any custom requirements. Our engineering team will respond with a detailed quote within 24 hours.

TTI Fiber 12,000 sqm manufacturing facility in Shenzhen, China

Why TTI Fiber

Trusted Manufacturer Since 2013

TTI Fiber is a professional fiber optic manufacturer based in Shenzhen, China. We provide full OEM/ODM services with factory-direct pricing and dedicated engineering support.

12,000sqmManufacturing Base
15+yearsIndustry Experience
100+countriesProducts Exported
30+brandsGlobal Partners
ISO9001ISO14001CERoHSCPRREACH

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