The Halo H4 LED is a family of 4 inch aperture recessed downlights with H455 series housings designed for use with Halo EL4 Series LED Light Engines and compatible 4 inch LED trims. Halo H4 LED housings have integral LED drivers that offer dimming as a standard feature. H455TUNVD010 is a Non-IC, AIR-TITE housing designed for non-insulated ceiling installations, and offers dimming capability with 0-10VDC control systems. Designed for use with EL4 series LED Light Engines, the H455TUNVD010 offers high quality downlighting along with high efficacy; the result being great lighting and significant energy savings.