4 x 4 x 1-1/2 in. D. Octagonal box extension ring 15.0 cu in.

Iberville steel boxes and covers are manufactured from hot dipped galvanized steel sheet. Iberville steel boxes incorporate numerous features which result in boxes rugged enough to stand up against the severest abuse. Extension ring with ground screw. Concentric knockouts. To extend an existing octagonal box Mount with screws directly on the original box Made of Steel Cubic capacity: 15.0 cu. in. 1-1/2 in. deep 4 in. diameter