2" Iolite LED downlights require a dedicated Iolite new construction housing. Adjustable slot aperture focuses the beam spread through 1-3/4" x 1-3/8" opening. Adjustability: 30° Compatible Housing: NHIOICD-215, NHIOICD-220, NHIOICD-225, NHIOICDCP-215, NHIOICDCP-220, NHIOICDCP-225 Lumens / Wattage: Up to 2500lm / 28W (varies by housing) Color Temperature: 5000K Color Rendering Index: 90 CRI Beam Spread: Three field changeable optics included Finish: Black Aperture / Matte Powder White Flange Listing: cULus listed for damp locations Accessories: NIO-AS, NIO-HC, NIO-FMMR-2R