Southwire 3-1/2 in. W x 1-1/2 in. D Steel Metallic Octagon Extention Ring with Four 1/2 in. KO's (1-Pack)

The Octagon Extension Ring is added to junction boxes to increase wiring capacity. It also provides access for additional conduit runs and electrical wire. The extension ring prevents the need to remove old conduit boxes and wiring from circuits when additional capacity is needed. Additionally, the combination knockouts allow for greater wiring flexibility.