4 inch LED non-IC new construction 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. Max 12 watts with 2700K or 3000K or 10 watts with 4000K LEDs. For use with compatible trims LEDR200, LEDR210, LEDT200, LEDS200, LEDS210. 13.5 inches long x 7.3 inches wide x 4.5 inches high. Suitable for damp location. UL listed.