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: 850lm / 12W Color Temperature: 4000K Color Rendering Index: 90 CRI Beam Spread: 10° Spot (fixed) Finish: Champagne Haze Listing: cULus listed for damp locations Accessories: NIO-AS, NIO-HC, NIO-4RTFA