See Downloads Tab above for ASI 8207 technical data sheet (.pdf)Fold-up Shower Seat is made of 1" (25mm) dia. and 1-1/4" (32mm) square x 18 gauge (1.3mm) tubing with 3/16" (4.8mm) thick mounting flanges and 16 gauge (1.5mm) guide bracket/arm support. Seat slats are 1" x 3" (25mm x 76mm) x 18 gauge rectangular tubing with welded closed ends. All are fabricated of seamless type 304, 18-8 alloy stainless steel. All exposed surfaces are No 4 satin finish. Structural assembly is welded construction. All exposed edges and corners are radiused and/or debarred. Support arm folds up when in retracted position to provide low profile against wall. No extra fittings are required to retain seat in storage position. Guide bracket controls seat lowering into operating position. Unit satisfies ADA Accessibility Guidelines when mounted properly.