Genware Racking. Complete 4 tier units available in 4 lengths (3", 4", 5" & 6") and 2 depths (18"& 24") all 72" high. 4 tier adjustable racking that is easy to assemble and adjust to the required height. Each shelf can carry a maximum weight of 600lb (270kg). Adjustable feet allow for uneven surfaces. Accessories available.