4" Iolite LED downlights require a dedicated Iolite new construction or remodel housing. Adjustable slot aperture focuses the beam spread through 2-5/8" x 2" opening. Adjustability: 40? (new construction) and 25? (remodel) Compatible Housing: NHIOICD-48. NHIOICDCP-48, NHRIOIC-48 Lumens / Wattage: 750lm / 12W Color Temperature: 2700K Color Rendering Index: 90 CRI Beam Spread: 10? Spot (fixed) Finish: Black Aperture / Black Flange Listing: cULus listed for damp locations Accessories: NIO-AS, NIO-HC, NIO-FMMR-4R