Centaur CM-4RB-MKO-PK50 Extension Ring, 4" Octagon, 1-1/2" Deep, (4) MKO's, Steel, Gray (Pack of 50)

The Centaur CM-4RB-MKO-PK50 Extension Ring is a steel 4-inch octagon electrical extension ring designed for use with electrical boxes in wall and ceiling installations. It provides additional box depth while maintaining a compact 1-1/2-inch profile and has a 15.5 cubic-inch capacity. The ring is made from durable 16-gauge steel with a gray finish and is designed for electrical device and light fixture installations. Its MKO configuration provides knockout access for wiring connections. The Centaur CM-4RB series is manufactured for dependable electrical installations and is certified to applicable UL and CSA standards. This product is supplied as a 50-piece pack for contractor, commercial, and electrical installation applications.