HALO Recessed H270RICAT 6-Inch 120-Volt Housing 13-Watt IC Air-Tite Compact Fluorescent with Remodel Electronic Ballast Remodel springs accommodate 1/2-Inch and 5/8-Inch ceiling material Slide-N-Side wire traps Die-formed housing Compact fluorescent with thermally protected electronic ballast Electronic ballast 120-Volt, 60-Hertz, NPF