IT7000E 4.25 Inch Low Voltage Non-IC Remodel Housing is designed for non insulated remodel applications. Non-IC designation requires that insulation be kept a minimum of 3 inches away from housing. Takes up to 7/8 inch ceiling thickness. Low voltage 12 volt electronic transformer included. One 50 watt, 12 volt GU5.3 MR16 bulb is required, but not included. Dimmable with a low voltage electronic dimmer. See attached manufacturer dimmer compatibility reference when using LED bulb option. Suitable for damp locations. UL listed. 4.3 inch ceiling cut out. 13.25 inch length x 5 inch width x 4.5 inch height. A complete fixture includes a housing and trim, sold separately.