Two 1/2 in and two 3/4 in conduit knockouts (sides). Two 1/2 in and two 3/4 in conduit knockouts (bottom). No bracket. Can be used in the installation of ceiling or wall lighting fixtures or as a junction box. Not designed for ceiling fan support. 50 lb maximum recommended static load. Acceptable for use in 2 hrs fire rated walls. UL listed. UPC bar code.