See Downloads Tab above for ASI 8358 technical data sheet (.pdf)Fold-Up Bathtub Seat is fabricated of 1′′ (25mm) OD alloy 18-8 type 304 stainless steel tubing with a No 4 satin finish and slats that 1/2′′ (13mm) thick solid phenolic with ivory color on top and bottom surfaces and has black edges. Mounting and retainer brackets are stainless steel 8 gauge and provided with countersunk holes for No 10 stainless steel screws. Structural assembly is welded construction and all exposed edges and corners radiused and debarred. Mounting brackets are permanently attached to seat frame. Unit has rubber grip pads permanently applied to surfaces that come into contact with tub. Wall mounted retainer hook holds seat up when in storage position and supplied loose.