... 110 wiring block 3.ODM&OEM 4.Certificate:UL,CE,ROHS,ISO9001 5.Application:network 110 type 100-pair cross ... connection panel, 19" 1U (without connecting blocks)110 WIRING BLOCKS 50 PAIRS ... internally. When a patch bay has half-normal wiring, its switching contacts flow through the bottom jacks ... .Distribution frames are cheaper, but less convenient. 25 pairs wiring block