Built to disappear into the ceilingThe LUNA Designer Series was evolved to be a flexible, low-glare and aesthetically pleasing luminaire, and this 3.5" square version shows it. The
airtight aluminum body is paired with an adjustable regressed gimbal, so the LED sits deep inside the housing instead of sitting flush with the ceiling plane — that recess is what kills glare and gives you that discreet, architectural look. An anodized blue heat sink keeps airflow moving around the LED module for stable, long-term performance, and the black trim finish (BK) blends into dark ceilings or creates a deliberate graphic contrast on white drywall.
Light quality and aimingThe LED module maintains uniform intensity and produces up to 1160 lumens with a typical
CRI of 95+, which is the level you want over a kitchen counter, a vanity, a gallery wall or a retail fixture. The lens delivers a 38° beam spread and the gimbal tilts up to 40°, so you can wall-wash, graze a texture or highlight a table without moving the housing. The on-fixture colour selectable switch covers
five colour temperatures: 2700 K, 3000 K, 3500 K, 4000 K and 5000 K — warm and cozy for living spaces, neutral for kitchens and offices, crisp for task and commercial areas. Dimming goes from 100% to 10% with industry standard forward-phase / reverse-phase and TRIAC/ELV dimmers.
Technical specificationsSKU: RA35S-12RG-90BK
Application: Ceiling Recess Mount
Approved location: Wet / Insulated Ceilings
Wattage: 12W
Lumens: Up to 1160
Lumens per watt: Up to 102
CCT (colour selectable): 2700 K / 3000 K / 3500 K / 4000 K / 5000 K
CRI: 95+
Beam angle: 38°
Tilt: 40°
Input: 100-135V AC, 50/60Hz
Power factor: >0.90
Dimming: 100%-10%, forward/reverse-phase TRIAC/ELV
Hole cut: Ø 3 5/8" (92 mm)
Operating temperature: -20°C~40°C (-4°F~104°F)
Projected life: 70% @ 50,000 hrs
Certification: cETLus, ENERGY STAR, Class II
Finish: Black
Warranty: Lifetime
Electrical and installationThe fixture ships with an extruded aluminum hardwire box housing a 12 watt (300mA) dimmable Class II electronic LED driver with 100-135V AC input. An 18" (457 mm) FT6 rated cable with a DC 2.1 connector links the driver to the fixture and is approved for use in plenums and suspended ceilings — handy for commercial retrofits. Three quick connect push-in terminals speed up wiring, and two spring loaded clips attach to any ceiling material. Cut a Ø 3 5/8" (92 mm) hole, feed the driver above the ceiling, snap the housing in and set the tilt. Because it is airtight and approved for direct contact with insulation, it suits attic-adjacent ceilings; for new construction or remodel work, vapour barrier extenders, pre-mounting plates and new construction plates for 3 1/2" LUNA LED fixtures are listed as accessories and sold separately.
Where to use it and documentationThink open-plan kitchens and islands, hallways, stairwells, bedrooms, basements, bathrooms and covered entries thanks to the wet location rating; on the commercial side, boutiques, cafés, clinics, salons, offices and hotel corridors where a low-glare square aperture reads as premium. Mix finishes across a project with the
white regressed gimbal version and the
brushed nickel version, use the
fixed 3.5" LUNA square recessed fixture in black for general ambient rows, or choose the
dim-to-warm black regressed gimbal for cozy living areas. The full technical PDF spec sheet is available in the Documentation tab for dimensions, lumen values per CCT and the complete ordering guide.