56 665 Pre-Galvanized Steel 1-Gang Drawn Extension Ring 4-Inch x 2-Inch x 1-7/8-Inch 13-Cubic-Inch

56 Rectangle drawn extension ring is suitable to use with 4-Inch handy box. It features steel construction and has pre-galvanized finish. It measures 4-Inch x 2-Inch x 1-7/8-Inch. Concrete box with eight knockouts, includes six 1/2-Inch sides knockouts and two 1/2-Inch end knockouts. It has 13-Cubic-Inch capacity. This extension ring is suitable for exposed work applications. Extension ring is UL listed, CSA certified and meets NEMA/ANSI standards.