C.R. LAURENCE Crl Gold Anodized Mirror Frame Extrusion. The Crl "Make It Yourself" Mirror Frame Extrusion has a 13/32" (10.5 mm) frame face, which allows for maximum mirror surface exposure and a unique profile, and eliminates the need for a backing. When hung using a Frame Cleat, the space behind the mirror prevents condensation of moisture, which adds life to the mirror. Fabrication consists of simply miter cutting the frame, drilling a 1/8" (3.2 mm) hole, and screwing the frame together using Cat. No.