Middle Atlantic ERK-3520 35-Space Stand Alone Black Rack with Rear Door - 19 1/2 inches DeepFEATURES: Fully welded construction, solid sides 2,500 lb. weight capacity UL Listed in the US and Canada Seismic certified (UBC 1997 & CBC 1998 Zone 4; IBC 2000, IBC 2003, ASCE 7 02, NFPA 5000 Seismic Use Group III) for protecting 650 lbs. of essential equipment when used in conjunction with our ERK Z4 brackets 1 2, 3 4, 1 and 1 1 2 electrical knockouts found on NEW! removable split rear plates, top knockout plate additionally includes UHF VHF