FeaturesDie cast trim ring with metal Coilex® baffle360 deg integral lamp holder rotation with locking thumbscrew1-7/8 in lamp aperture3-3/4 in ceiling opening120 VAC GU10 50 W, 12V MR16 50 W, 12V MR16 37 W maximum lamp compatibility2-1/4 in W baffleWet location listed for showers