Single Round Opening, Series 4000, For Raceway Width x Height 7/8 in x 7/16 in, Cover Type Snap On; Latching, Number of Channels 1, 2, Material Steel, Height 5 1/8 in, Length 5 1/8 in, Width 4 3/4 in, Backing -, Color Ivory, For Use With 4000 Raceways, Features For Straight Blade And Single Locking Receptacles, Two-Gang Overlapping Cover Single Round Opening, Includes -, Mounting Snap On