easy operation and convenient expanding. With fiber splice, store and distribution functions, splice tray can be operated outside, easy ... 1minIsolation resistance between protection end and rack:≥100MΩ/500V(DC)Fiber capability: 12-72 coresModelCapabilityAdaptor MaterialDimensionStyleFDB-T1212fFC,SC.STSteel/SMC380 ... rackFDB-T7272fFC,SC.STSteel380 x330 x 195mmWall rack Optical Fiber Distribution Box