1000AICM Lytecaster 5 Inch Aperture Incandescent AirSeal IC Frame-In Kit is made of galvanized steel and can be used for direct contact with thermal insulation. AirSeal housing minimizes air leakage and reduces heat loss and condensation on ceiling. Accommodates all ceilings up to 1 inch thick. Includes adjustable mounting bars 13 to 27 inches long. 5 1/8 inch ceiling cut out. 15.5 inch width x 9 inch depth x 7 5/16 inch height. UL listed. Suitable for damp locations. Lamp type and wattage dependent on frame-in kit/trim combination. A complete fixture includes a frame-in kit and a trim kit, sold separately.