FEATURE? For Retrofiting Nora 6" CFL, CMH & Incand. Commercial & Architectural frames.? Latest Cree technology; integrated driver and ceramic LED package? Deep cone reflectors, wall wash or decorative glass? 97 Lumens per Watt and 70% efficacy? 850, 1250, 2000, 3000 & 4000 Lumen? High color rendition - 90+ CRI, True-White Technology? Optional Comfort Dim for Smooth dimming from 2700K down to 1800K? Dimmable (850 & 1250: Triac; 2000-4000: 0-10V)? Thermally protected? cULus Listed for Wet Location? 10-year Limited WarrantyCONSTRUCTION:ReflectorDeep cone self flanged reflector spun from 0.050 high grade aluminum provides even illuminationand visual comfort. The deep cone reflectors provide 55+ degree cut-off. The reflector includesthe LED optical package and heat sink mounted to the top. NC-638 includes 3 studs mounted inflange for attaching decorative glass.