FDA approved blow-molded high-density, grey-color polyethylene with Microban® antimicrobial additive. Reinforced full-length steel-on-steel hinge mechanism, with 11-gauge steel mounting plates and mounting hardware included. Molded in graphics and safety messages in six languages and Braille. Contoured changing surface area is 442 sq in (2873 sq mm) and comes complete with nylon safety straps and bag hooks. Unit measures 35 1/4" W x 20" H (895 x 508mm). Depth (closed) 4" (100 mm). Extension (open) 19" (483mm).