Octagon Outlet Box Plaster Rings: Type - Ceiling Outlet Box Extension Ring; Shape - Octagon; Material - Plastic; Diameter in inch - 4; Depth in inch - 1-1/2; Standard Package - 25; Additional Information - Application: Extender for 3-1/2 to 4 in steel boxes 0 to 1-1/2 in setback.
Additional Info: Application: Extender for 3-1/2 to 4 in steel boxes 0 to 1-1/2 in setback.