Easy Installation Suit for 5/6 inch Recessed Can, or any 4" Junction Box. Selectable 5CCT GREENLUX LED recessed disk lights offers you the option of choosing your color temperature directly on the fixture. With the flick of a switch, you can choose between 5 color temperatures ranging from warm (2700K) to daylight (5000K) before install into your ceiling. Parameter LED ceiling lights is 120 Voltage, comply with US voltage requirement. 15 watt, provide 900lm brightness which equals to 120W halogen lamp, energy save more than 80% Applications Ideal applications include bedroom, kitchen, living areas, and offices.