BELL® 5407-0 Weatherproof Extension Ring, 2 Gangs, 4-21/32 in L x 4-21/32 in W x 1-1/32 in D, Die Cast Aluminum

Red Dot® 2IHE Universal Box Extension Ring, 2 Gangs, 4-5/8 in L x 4-5/8 in W x 1 in D, Die Cast Aluminum

Red Dot® IHE Universal Box Extension Adapter, 1 Gang, 4-9/16 in L x 2-13/16 in W x 1 in D, Aluminum

Red Dot® S121E-R Universal Box Extension Adapter, 1 Gangs, 1-3/8 in D, Aluminum Alloy