NW3000CM 3.5 Inch Low Voltage Non-IC Shallow New Construction Housing is designed for new construction applications and damp locations. Non-IC designation requires that insulation be kept a minimum of 3 inches away from housing. Below ceiling accessible. Takes up to 1.5 inch ceiling thickness. Low voltage 12 volt magnetic transformer is included. One 37-50 watt, 12 volt GU5.3 MR16 bulb is required, but not included. Wattage dependent on housing/trim combination. Dimmable with a low voltage magnetic dimmer. Consult bulb manufacturer for low voltage magnetic dimmer compatibility when using LED bulb option. Suitable for damp locations. UL listed. Ceiling cutout 3 5/8 inch. Housing dimensions: 15.38 inch length x 10 inch width x 3.4 inch height. A complete fixture includes a housing and trim, sold separately.