HUBBELL CANADA ULC H55171KBAR OCTAGON EXT RING4X2.125IN K
Description
Extension Ring for 4 inch octagon box, 2-1/8 inch seep, 21 cubic inch with concentric, 1/2 and 3/4 inch KO (50-Pack). Combination screw heads provide for faster installation, self-tapping screws virtually eliminate stripping. Octagon boxes can be used in the installation of ceiling or wall lighting fixtures. Extension rings provide a means for adding additional cubic capacity.