4" Steel Extension Ring

Southwire Old Work Square Galvanized Steel Box Extension Ring Silver

4 in. square extension rings are added to junction boxes to increase wiring capacity. This provides access for additional conduit runs and electrical wire. It prevents the need to remove old conduit boxes and wiring from circuits when additional capacity is needed. Additionally, these rings are UL and RoHS compliant.
Durable drawn construction
Combination knockouts allow for greater wiring flexibility
Combination Phillips/slotted screw heads