Stainless Steel Channel Frame Mirror & Shelf shall have one piece 1/2" x 1/2" x 1/2" (13 x 13 x 13 mm) 20 gauge type 304 satin finish stainless steel channel is a one piece roll formed member that encases mirror and backing revealing a tight mitered corner. Mirror is installed on two wall brackets and held secure by theft resistant screw. Select float glass mirror shall be guaranteed for 15 years against silver spoilage. This Channel Frame Mirror is built with an 18 gauge stainless steel shelf with satin finish and all edges returned and hemmed for maximum rigidity and safety. Shelf is welded to face frame and is 5" (127 mm) wide.