ENT boxes are used with ENT wiring system in branch circuit wiring to splice wires and accommodate wiring devices such as switches and receptacles. 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. Unique bracket design features automatic setback gauges for quick installation. 1/2 inch setback.