Fold-up Shower Seat made of 1" (25) dia. and 1-1/4" (32) square x 18 gauge (1.3) tubing with 3/16" (4.8) thick mounting flanges and 16 gauge (1.5) guide bracket/arm support. Seat slats 1" x 3" (25 x 76) x 18 gauge rectangular tubing with welded closed ends. All exposed surfaces are a satin finish.