Features: 1) Reliable fastening, stripping and earthling devices for optic fiber 2) Suitable for lc, lcd, sc, scd, fc, lcq, st and std adaptor 3) Fit for 19 rack 4) Accessories make fiber avoid damaging. 5) Slide out design, easy to access the back and splicer 6) High-quality steel, beautiful appearance. 7) Maximum capacity: 48 fibers 8) All material is rohs compliant Main performance Optics performance 1) Insert loss: 0.2db 2) Return loss: 50db (upc), 60db (apc) 3) Durability: 1000 mating 4) Wavelength: 850nm, 1310nm, 1550nm Operating condition 1) Operating temperature: -25c~+40c 2) Storage temperature: -25c~+55c 3) Relative humidity : 85%(+30c 4) Air pressure: 70kpa~106kpa Paint & color 1) Color: ral7035 2) Paint: comply with ASTM. Kington box.