One-piece, roll-formed 3/4″ x 3/4″ (19 x 19mm) angle-frame. Type 304 stainless steel angle with satin finish*. Corners heliarc welded, ground and polished smooth. Beveled frame edge at mirror for improved appearance. No. 1 quality, 1/4″ (6mm) glass mirror; warranted against silver spoilage for 15 years. Galvanized steel back. Secured to concealed wall hanger with theft-resistant mounting.