Round ENT boxes are used with ENT wiring system in branch circuit wiring to splice wires and to hang light fixtures. Not designed for ceiling fan support. RACO nonmetallic cable boxes provide the installer with a cost alternative that is lightweight and easy to install. TKO knockouts offer greater flexibility with RACOs patented combination 1/2 inch and 3/4 inch knockout. 1/2 inch setback with ceiling surface. Side mount bracket.