The Halo ML56 LED downlight collection is comprised of LED modules with 5" and 6" trims. ML56 LED modules are offered in three lumen packages across the 600, 900, and 1200 series - a versatile collection of energy-efficient LED downlights for general lighting in commercial and residential applications. The Halo ML56 LED 600, 900, 1200 series modules are for either new construction or retrofitting existing 5" and 6" compatible housings (Edison screw base adapter included).