Raco Exposed square surface cover with 6.5 cubic inch capacity is designed to support switches independent of the box. It measures 4 inch x 1/2 inch x 4 inch. Device mounting cover made of steel material offers long lasting durability. Raised crushed corner cover provides a magnificent crush resistance. Surface cover is UL listed and CSA certified. Exposed Work CoverRaised 1/2 in.RACO® exposed work covers include required hardware for mounting the receptacle(s)