IT5000CE 2.5 Inch Low Voltage Non-IC Shallow 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. Below ceiling accessible. Takes up to 7/8 inch ceiling thickness. Low voltage 12 volt electronic transformer included. One 20 watt, 12 volt MR11 bipin bulb is required, but not included. Dimmable with a low voltage electronic dimmer. Suitable for damp locations. UL listed. 2.6 inch cut out. 9.5 inch length x 3.9 inch width x 3.4 inch height. A complete fixture includes a housing and trim, sold separately.