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. ofessential equipment when used in conjunction with MiddleAtlantic's MRK-Z4 brackets
OSHPD approved for fixed equipment anchorage in California healthcarefacilities
1/2", 3/4", 1" and 1-1/2" electrical knockouts found on removable splitrear plates, top knockout plate additionally includes UHF/VHF antenna knockouts
2 pairs of wider rack rails provide more interior room