Single Rack-U-Frames: Completely assembled ready for use. For maximum capacity and safety, the units should be installed on a solid, smooth surface, evenly spaced 20 ft., and stacked a maximum of 4 high. RUF-251 - 20, 000 lb. capacity, RUF-640 - 60, 000 lb. capacity.
Twin Rack-U-Frames: Used in multiples with forklifts, as required to provide length and tier height needed for storage. Can be stacked a maximum of four high. 5, 000 lb. capacit