Steel City 56111CFB-BHL Pre-Galvanized Steel Round Ceiling Fan Box with Aluminum Bar Hanger with 1/2-Inch Knockouts and Romex Connector Go to amazon.com Related posts Which is the best romex hangers? FeatureDrawn constructionFor new workAluminum bar hangerNo.10 32 x 1/2-Inch fan mounting screws includedUL listed