Raco Ceiling Fan Rated Boxes are designed, tested and UL listed for the dynamic loads of ceiling fans. Designed with the installer in mind and rich in 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. With proper fitting can be used for conduit, NMSC, armored, metal clad, flex cable plastic insider provided for nonmetallic sheathed cable. Durable pre-galvanized steel construction. Maximum support load for ceiling fans 70 lbs. and 150 lbs. for static light fixtures.