Seismic certified (UBC 1997 & CBC 1998 Zone 4; IBC 2000, IBC 2003, ASCE 7 - 02, NFPA 5000 Seismic Use Group III) for protecting 1000 lbs. of essential equipment when used in conjunction with our MRK-Z4 brackets
Slim 22" OD width
Available in 4 depths: 26.5", 31.5", 36" & NEW! 42 "
2 pairs of wider rackrail provide more interior room
Laser-cut 1/8" thick internal steel braces for strength
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