Residential grade. For rough use applications inside and outside the home. Rubber construction exposes no internal metal parts, cold tolerant materials. Triple combination screws, husk, and module keyed for easy alignment during wiring. Beveled edge prevents snagging when dragged. Use with 18-3 to 12-3 cable. 2-pole, 2-wire. 15A/125V, NEMA 1-15. Black. UL (Underwriter's Laboratories) listed. Use with No. 115CR connector.