End plate. Thermoplastic construction for durability and flexibility. Easy to snap together and lock. Mid-size design to fit over most existing wall openings. Screw-catch feature holds already attached mounting screws captive for easy installation. Screws are slotted steel, baked enamel and painted. Meets current Federal specifications as tested to UL 514. Meets all CSA requirements C22.2, No. 42.1, cUL Listed. NEMA WD-1, WD-6. Temperature rating -40 to 65 deg C.