Two Gang Power Outlet Receptacle Opening, 2.1563" hole for 2.125" diameter device - 4 mtg. holes, Smooth 302/304 Metal.FEATURES AND BENEFITS: • RoHS Compliant • Type 302/304 Stainless Steel, non-magnetic: .032" nominal thickness. • Brushed finish. • This alloy contains 18% chromium and 8% nickel for superior resistance to corrosion. • 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. • Can be silk-screened or engraved, and custom punched with over 300 opening styles.