4" Trimless Iolite downlights have no exposed trim flange and do not extend beyond the ceiling plane. Iolite Trimless requires a Trimless Mud Ring and New Construction housing. Regressed cone reflector optimizes visual cut-off and adjust up to 35° Required Trimless Mud Plate: NIO-TLMR-4RA Compatible Housing: NHIOICD-48. NHIOICDCP-48 Lumens / Wattage: 800lm / 14W Color Temperature: Comfort Dim (3100K-2000K) Color Rendering Index: 90 CRI Beam Spread: Three field changeable optics included Finish: Haze Adjustable / Matte Powder White Reflector Listing: cULus listed for damp locations Accessories: NIO-AS, NIO-HC, NIO-TLSUCTION