Subject to acceptance by an electrical inspectorAdd-A-Depth ring or goof ring is designed to act as a barrier between combustible wall surfaces and the wiring systemThere is no UL standard for this productFor single and 2-gang device boxes1/4 to 1 in adjustment range
RACO® 976 Switch Box Adjustment Ring, 1 in L x 4 in W x 1.78 in D, Stamped Steel