Plaster Ring, Mounting Accessories, Material Galvanized Zinc, Silver Color, For Use With 4 In. One Gang Box, Capacity 1.50 cu. in., Raised Height 1/4 In., Box Type 4, Number of Gangs 1 Use this raised device cover to mount a switch or receptacle. The angled mounting slots compensate up to 12 Degrees for box misalignment.