TC Housing designed for use in non-insulated areas. If installed where insulation is present, the insulation must be pulled back 3” from all sides of TC housing. Lamp: Lamp ratings based on trim selected. Socket: Floating medium base porcelain 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 V4017 and V4034 are wet location approved for covered ceiling applications, when used with outdoor rated lamps. Testing: All reports are based on published industry procedures; field performance may differ from laboratory performance.