Product details:

Frame is a one piece roll-formed stainless steel with bright annealed finish. With 90 degree mitered corners. Back is stainless steel. The mirror is 1/4 float glass triple-silver-plated with electro-copper-plated layer with Poly-Glaze protective finish. Mounting brackets are 18 guage cold rolled steel. Channel size: 3/4 x 3/4 x 7/16 .