FeaturesDetachable medium base porcelain socket with nickel plated copper screw shellRemodel springs accommodate up to a 1-1/8-in ceiling thicknessSteel housing is fully assembled for ease of installationPre-wired junction box with (5) 1/2 in knockouts with pryout slots, (4) non-metallic sheathed cable connectors and ground wireShadow-free, knife edge trim design blends smoothly into the ceilingUL listed, cUL, CSA certified for through branch wiring, maximum (4) 12 AWG minimum 90 deg C branch circuit conductorsThermally protected against improper use of lamps or insulationInstalls through an opening in the ceiling from belowSecured in place by factory installed remodel springsDesign for use in non-insulated areasIf installed where insulation is present, the insulation must be pulled back 3 in from all sides of the TC housingRemodel springs accommodate up to a 1-1/8 in ceiling thicknessR14/R16/R20/PAR16/PAR20 lamps