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4 inches octagonal extension ring 1-1/2 inches depth 15 cubic inches volume. Extension ring with ground screw. Concentric knockouts. Raised ground screw.
In Stock in Gescan
4 inches octagonal extension ring 2-1/8 inches depth 21 cubic inches volume. Extension ring with ground screw. Concentric knockouts. Raised ground screw.
Concrete ring 4 inches height x 4 inches width x 3-1/2 inches depth 42 cubic inches.
Concrete ring adapter for quick mounting and alignment of octogonal extension ring (BC55151-K, CI55171-K) on concrete ring.