IC Air-Loc Housing with all 4” trims complies with IECC, Washington state and other state Energy codes. Double wall construction. Energy efficient, sealed inner housing does not require separate ALG gasket. Air-Loc housing stops infiltration and exfiltration of air, reducing heating and cooling costs. Can be completely covered with insulation. Lamp: Lamp ratings based on trim selected. Socket: Floating medium porcelain base with nickel-plated copper screw shell. Shipped with socket cap to protect against paint overspray. Labels: U.L. listed for through-branch wiring, damp locations and IP: Product thermally protected against improper use of lamps or Insulation. Union made. UL Listed/CSA certified. Trim V4012 is wet location approved for covered ceiling applications. Trims V4034 and V4017 are wet location approved for covered ceiling applications, when used with outdoor rated PAR lamps. Testing: All reports are based on published industry procedures; field performance may differ from laboratory performance.