1 in. solid HDPE Bradmar Bradley shower seats bench. Rectangular HDPE seat has a cobblestone texture in linen color. 1-1/2in. HDPE support bar and 18 gauge 1 in. diameter stainless steel tubing. 7 gauge satin finish stainless steel mounting flanges with three mounting holes provided in each flange for installation. 16 gauge satin finish stainless steel lower support bracket. Designed to support up to 400lbs static load.