Capacity:2000 Pair,3000 Pair,Small Copper Connectivity Central Office Solution. 1) Reeds adopt separate double-contact structure with angle 2) Excess voltage and current protection 3) Three levels acoustic-optic alarming mode 4) Modular design, flexible configuration 5) Full structure of aluminum alloy section bar, convenient for installation 6) High density and big capacity 7) All the plastic parts use flame retardant materials, and the flame retardant capability reaches level FV-0 Double side Main Distribution Frame, Vertical terminal blocks for 100 pair Protection Terminal Block,Equipped with OverVoltage and OverCurrent Protection Block, Back Side For Testing/Test Wiring Block 128 Pair,Horizontal Installations. Other Accessories:Punch Down Tool,Test Cord,etc Aluminum frame for MDF Frame Body,Assembled Structure easy for installation Ask us for dimension and other details