Built to disappear into the ceilingThe LUNA 3.5" square regressed gimbal is built around a durable
airtight aluminum body with an adjustable regressed gimbal, plus an anodized blue heat sink that keeps airflow — and LED life — at its best. Recessing the optic behind the square trim is what kills the glare: you see the effect of the light, not the source. The gimbal tilts up to 40° so you can graze a stone feature wall, pull art out of the shadows or angle light away from a TV screen. Overall dimensions are 4 3/8" (111 mm) and 3 3/8" (85 mm) across the trim, with a 1 5/16" (34 mm) profile and an aperture assembly measuring 3 1/16" (78 mm) by 4 3/16" (106 mm). The Brushed Nickel trim of this RA35S-12RG-DTW90BN is one of four finishes offered in the series (BK / BN / OB / WH).
Light quality you can actually seeWith a typical
CRI of 95+, this is the kind of
colour selectable downlight you want over a kitchen island, a vanity or a retail counter, where dull, washed-out colour is instantly obvious. The on-fixture switch steps through 2700 K, 3000 K, 3500 K, 4000 K and 5000 K — five selectable colour temperatures — so one box covers warm residential rooms and crisp commercial spaces alike, and lets you correct the ambience after drywall is up. The 38° beam spread is a true general-purpose distribution: tight enough to feel directional, wide enough to space out on a normal 8-foot ceiling.
Technical specificationsApplication: 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
Dimming: Yes, 100%-10%, forward/reverse-phase TRIAC/ELV
Power factor: >0.90
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
Colour: Brushed Nickel
Warranty: Lifetime
Wiring and installationTwo spring-loaded clips hold the fixture to any ceiling material, so remodel work goes fast: cut the 92 mm hole, wire the box, push the housing up. The extruded aluminum hardwire box carries a 12 watt (300 mA) dimmable Class II electronic LED driver with three
quick connect push-in terminals for fast wiring, and an 18" (457 mm) FT6 rated cable with a DC 2.1 connector between driver and fixture — approved for use in plenums and suspended ceilings. Because the unit is airtight, wet location rated and approved for direct contact with insulation, it suits insulated attics, bathrooms and covered exterior ceilings; vapour barrier extenders and new construction mounting hardware are listed as accessories and are sold separately. Always confirm your dimmer against the manufacturer's compatible dimmer list before final commissioning.
Where it works and what to pair it withThink open-concept kitchens and hallways, stairwells, sloped ceilings where a fixed downlight would spill sideways, hotel corridors, boutiques, dental and medical clinics, offices and restaurant seating. On a job, most designers alternate aimable and fixed heads: pair this one with the
3.5" LUNA square regressed gimbal RA35S-12RG-90BN, choose a darker trim like the
3.5" LUNA square regressed gimbal RA35S-12RG-DTW90BK or a white one with the
3.5" LUNA square regressed gimbal RA35S-12RG-DTW90WH, and fill general areas with the fixed
3.5" LUNA square recessed fixture RA35S-12F-27K-90WH. The complete technical PDF spec sheet for RA35S-12RG-DTW90BN is in the Documentation tab, with dimensions, lumen table per CCT and the full ordering guide.