Wall plate is of type 302 stainless steel, non-magnetic with power outlet receptacle opening. 1.75 inch hole for 1.71896 inch diameter device. Brushed finish. Recommended for use in food processing plants, dairies, chemical plants and other industrial, institutional and commercial applications where corrosive atmospheres exist. Packaged in protective film, with finish-matching screws. Variety of special plated finishes. Paintable to match plastic plates. It can be silk-screened or engraved and custom punched with over 300 opening styles. Nominal thickness 0.032 inch.