Features: 1) Vertical type 2) Hoop is used to fix and seal FOSC cover and base 3) Provided with 3 single fiber entry / exit ports and 1 large ports which can accommodate 2 pieces of fiber cable with max. diameter 30mm simultaneously. While straight-through fiber cable is for branching application, fibers uncut are for straight-through after being fixed and winded, fibers cut off are for branching after fusion splicing with fibers of other branching fiber cable 4) Simple installation 5) The FOSC is suitable for protecting fiber cable splices in straight-through and branching applications 6) Can be placed in aerial, underground, wall-mounting and handhold-mounting and duct-mounting application 7) Based on an advanced formula, the plastic parts are made of injection molded, high-strength engineering plastic PC by numerical control equipment 8) Effectively prevent products from aging caused by coldness, heat, oxygen and ultraviolet radiation 9) Ensures long-term reliability and usage under ambient temperature from -40 to +65oC 10) Advanced internal structure design 11) Fiber suffers no attenuation 12) Designed in Slide-iN-Lock and its opening angle is above 90° 13) The bend radius meets with the international standard 14) Easy and fast to increase and reduce FOSTs and fix fiber cable 15) Innovative elastic integrated seal fitting 16) The housing of FOSC is spacious in particular, while straight-through fiber cable is for branching application, fibers not cutting off are for straight-through after being fixed and winded, fibers cutting off are for branching after fusion splicing with fibers of other branching fiber cable 17) Easy and convenient for installation, maintenance and reuse 18) The earthing deriving device can be installed on the housing of FOSC for deriving metallic parts of fiber cable for earthing connection 19) Pressure testing valve can be installed as well for pressure testing and sealing testing after injecting air 20) Outside dimensions (height and diameter): 510mm x 250mm 21) Additional tray-fiber holding tray is used to hold straight through and reserved fibers with protective coat