Steel, 0.062 in. Wall thk, 1.750 in. Pipe dia, 90 degrees bend, 17.500 in. 1st leg lg, w/38 diffusion holes 0.250 in dia, drilled 90 degrees angle from bend, 1st end is bent shut w/0.375 in. Diameter mtg hole, 2nd lg 13.750 in. Lg w/expanded end and slotted for mtg on 1.750 in. Tube