Hubbell-Raco 926 Ceiling Fan Box with T Brace, 1-1/2 in. Deep Box for New Construction, Three 1/2 in. Knock Out's With proper fitting can be used for Conduit, NMSC, Armored, Metal Clad, Flex cable Plastic Insider provided for NMSC cable Suitable for ceiling fan installations 15.8cu. in. capacity The maximum support load for ceiling fans 70 pounds and 210 pounds for static light fixtures The product is UL Listed