3.5 inch LED 18 watt non-ic remodel housing with electronic driver has .051 inch thick galvanized steel, is below ceiling accessible, takes up to .9 inch thick ceiling, and has no light leak. Housing should be at least 3 inches from insulation. 3.6 inch ceiling cut out. Max 18 watts with 2700K and 3000K or 15 watts with 4000K LED. For use with compatible trims LEDR314, LEDR315, LEDR345, LEDR347, LEDS314, LEDS315, LEDS345. 13.75 inches long x 4.6 inches wide x 5.6 inches high. Suitable for damp location. UL listed.