Poly-tier supports provide sturdy support for multi-level conveyor lines. Heights available from 36 in. to 120 in. in 6 in. increments. 1-1/2 in. I.D. (1.9 in. O.D.) crosspipe assembly mounted to 1-3/4 in. x 4 in. x 7 ga. steel support legs. Capacity: 1500 lbs. per crosspipe-4500 lbs. per set of legs. Supplied for overall conveyor widths from 10 in. to 42 in. wide. Knee braces are supplied to provide extra stability to support.