The Halo H4 LED is a family of 4-Inch aperture recessed down lights with H455 series housings are designed for use with Halo EL4 Series LED Light Engines and compatible TL4 Series LED trims. Halo H4 LED housings have integral LED drivers that offer dimming as a standard feature. The Halo LED EL4058xx Light Engines are designed for use in the LED dedicated housing Series H455x. Halo LED H4 Series light engines deliver in the range of 534-700 lumens (depending upon the trim and selected color temperature); and the H4 Series offers a selection of four color temperatures: 2700K, 3000K, 3500K, 4000K. Halo LED offers a superior optical design that yields productive beam lumens, good cutoff and low glare.