B-1658 2436 Tempered Glass Channel Frame. 24" W x 36" H (61 x 91cm). One-piece, 1/2" x 1/2" x 3/8" (13 x 13 x 9.5mm) channel-frame. Type 430 stainless steel with bright-polished finish. Mitered corners. Frame screw permits easy replacement of glass. 1/4" (6mm) tempered glass mirror. Galvanized steel back. Secured to concealed wall hanger with theft-resistant mounting. Tempered glass mirrors resist breakage and provide a measure of safety from broken glass, but differ in color and reflective quality from standard glass mirrors. Bobrick uses the highest quality tempered glass mirrors. Modest distortion or heat-generated markings are normal in the tempered glass mirror manufacturing process. Therefore, Bobrick will not accept returns of tempered glass mirrors with random distortion or markings.