Built to disappear into the ceilingThe LUNA Designer Series was evolved to be a flexible, low-glare and aesthetically pleasing luminaire, and the regressed gimbal version is the proof. The
durable airtight aluminum body houses an adjustable regressed gimbal, so the light source sits deep inside the trim instead of staring back at you. An anodized blue heat sink maximizes airflow around the LED light source, which is what keeps output and colour stable year after year. The Brushed Nickel trim (BN) suits stainless appliances, modern hardware and warm neutral interiors, and the square aperture lines up cleanly with cabinetry, beams and tile joints — a detail designers notice immediately in a row of
square LED pot lights.
Light quality and colour selectionThis general application fixture produces
up to 1140 lumens from a module that maintains uniform intensity, with a typical
CRI of 96 — a level of colour rendering usually reserved for galleries and showrooms. The on-fixture colour selectable switch lets you pick between five colour temperatures on site: 2700 K (1015 lumens), 3000 K (1070), 3500 K (1115), 4000 K (1140) and 5000 K (1115). Warm for a living room, neutral for a kitchen, cool for a workshop or a retail display — one SKU covers all of it, which means fewer returns and no guessing at the specification stage. The lens delivers a controlled
38° beam spread, and the tilting gimbal lets you aim it 20° to either side for accent and wall-wash work.
Technical specificationsApplication: Ceiling Recess Mount
Approved location: Wet / Insulated Ceilings
Wattage: 9W / 12W
Lumens: Up to 1140
Lumens per watt: Up to 102
CCT (colour selectable): 2700 K / 3000 K / 3500 K / 4000 K / 5000 K
CRI: 96
Beam angle: 38°
Input: 100-135V AC, 50/60Hz
Dimming: 100%-10%, forward/reverse-phase, TRIAC/ELV
Power factor: 0.9
Hole cut: Ø 4 1/4" (108 mm)
Operating temperature: -20°C~40°C (-4°F~104°F)
Class II: Yes
Certification: cETLus
ENERGY STAR: Yes
Projected life: 70% @ 50,000 hrs
Warranty: Lifetime
Finish: Brushed Nickel (BN)
Wiring and installationThe extruded aluminum hardwire box carries a dimmable Class II electronic LED driver — 12 watt (300mA) or 9 watt (210mA) — with 100-135V AC input, and an 18" FT6 rated cable with a DC 2.1 connector links driver and fixture, approved for use in plenums and suspended ceilings. Three
Quick Connect push-in terminals make the wiring fast on a long run of downlights, and two spring loaded clips let the fixture attach to any ceiling material. It is airtight, approved for direct contact with insulation and tested with insulation up to R60; a vapour barrier extender is recommended in spray foam and loose fill applications, and accessories such as pre-mounting plates, new construction plates and mounting kits are sold separately. It is compatible with industry standard forward-phase / reverse-phase and TRIAC/ELV dimmers — a smart Wi-Fi dimmer is one way to control a room of them.
Where it works, and the paperworkThink kitchen ceilings and islands, hallways, stairwells, primary bedrooms, basements, bathrooms and covered entries thanks to the wet location rating, then boutiques, dental and medical clinics, offices, hotel corridors and restaurants where a low-glare regressed aperture keeps ceilings calm. The full
spec sheet PDF for RA4S-12RG-90BN is in the Documentation tab with dimensions, the lumen table per CCT and the complete ordering guide. Matching the rest of your ceiling is easy: compare the
4" LUNA LED square gimbal recessed fixture for a flush gimbal look, the dim-to-warm
RA4S-12RG-DTW90BK, or the colour-changing
LUNA 4" OnCloud RGBTW for accent zones.