Built to last, built to aimThe LUNA™ square gimbal starts with a durable airtight aluminum body and an adjustable gimbal that tilts 20°, so you can wash a wall, highlight cabinetry or angle light away from a TV screen. An anodized blue heat sink sits behind the LED module to maximize airflow and keep junction temperatures in check — that's what protects colour consistency and lumen output over the years. The square brushed nickel trim (finish code BN) gives the architectural, flush look designers love, while the fixture itself measures 4 15⁄16" (125mm) across the trim, 3 3⁄8" (85mm) deep and 1 5⁄16" (34mm) at the profile, with a compact 2" (51mm) dimension noted on the drawing.
Light quality you can seeThe 12 watt LED module maintains uniform intensity and produces up to 1035 lumens, a strong 92 lumens per watt. A typical
CRI of 90 means colours are rendered honestly — critical in kitchens, bathrooms, boutiques and galleries where washed-out light ruins the effect. The 3000 K colour temperature lands in that comfortable warm-white zone that flatters wood, stone and warm paint palettes, and the lens shapes a controlled 40° beam spread for accenting rather than flooding. Because it's an
LED recessed downlight, you get that output while drawing only 12W, a dramatic drop compared with old halogen pot lights.
Technical specificationsApplication: Ceiling Recess Mount
Approved Location: Wet / Insulated Ceilings
Wattage: 12W
Lumens: 1035
Lumens per Watt: 92
CCT: 3000 K
CRI: 90
Beam Angle: 40°
Input: 100-135V AC, 60Hz
Dimming: Yes, 100%-10%
Dimming Tech: TRIAC/ELV
Power Factor: 0.95
Hole Cut: Ø 4 3⁄16" (106mm)
Class II: Yes
Certification: cETLus
Energy Star: Yes
LM79 / LM80: Yes
Projected Life: 70% @ 50,000 hrs
Operating Temperature: -20°C~40°C (-4°F~104°F)
Warranty: Lifetime
Wiring and installationThe extruded aluminum hardwire box houses a 300mA dimmable Class II electronic driver and connects to the fixture with an 18" (457mm) FT6 rated cable fitted with a DC 2.1 connector — approved for use in plenums and suspended ceilings. Three quick connect push-in terminals make wiring fast on site, and two spring-loaded clips let the fixture attach to virtually any ceiling material. Cut a Ø 4 3⁄16" (106mm) hole, tuck the driver box into the cavity, click, push and you're done. Since it's approved for direct contact with insulation and rated for wet locations, it's a safe pick for insulated attics, soffits, covered entries and shower ceilings. For
dimming, pair it with industry standard TRIAC/ELV dimmers.
Where it works and what's documentedThink whole-home lighting plans: kitchen perimeters, hallway runs, stairwell accents, basement rec rooms and bathroom ceilings — plus commercial jobs like cafés, salons, dental offices and retail displays where aimable 3000 K accent light sells the space. Matching a whole project is easy across the family: see the
4" Luna LED square gimbal recessed fixture RA4S-12G-90WH, the
4" Luna LED square gimbal recessed fixture RA4S-12G-DTW-90WH or the
4" Luna LED square regressed gimbal recessed fixture RA4S-12RG-90WH for a deeper-set aperture. The full technical PDF spec sheet for RA4S-12G-DTW-90BN is available in the Documentation tab with dimensions, the ordering guide and the list of accessories (sold separately).