Designed, tested, and UL listed for the dynamic loads of ceiling fans. Use this product when replacing an existing ceiling fan. Product keeps the installer in mind with time saving features. A variety of products are available to meet nearly every application. RACO "Insider" connector is included for use with non metallic sheathed cable.. Durable pre-galvanized steel construction. With proper fitting can be used for conduit, NMSC, armored, metal clad, or flex cable. Plastic insider provided for NMSC. 22.4 cu. in. capacity. Maximum support load for ceiling fans 70 lbs. and 110 lbs. at 16 in. for static light fixtures. Mounting hardware and instructions included. Box Type: Fan fixture box. Material: Steel. Trade Size (in.): 1/2. Number of Gangs: 0. Number of Knockouts/Pryouts: 3. Packaging Type: Consumer Packaging