Built to last, built to install fastThe LUNA 3.5" round fixed downlight uses a durable airtight
fixed aluminum body with an anodized blue heat sink that maximizes airflow around the LED light source — cooler running gear means steadier light over the years. Two spring-loaded clips grip any ceiling material, so the fixture seats itself in the Ø 3 5/8" (92 mm) hole cut without extra hardware. The
recessed LED downlight measures 4 3/8" (111 mm) at the trim and 3 3/8" (85 mm) deep, with a 3 1/16" (78 mm) body and a 15/16" (34 mm) profile at the hardwire box, making it friendly to shallow plenums and tight joist bays.
Dim-to-warm light qualityThis SKU, RA35-12F-DTW-90BK, is the
dim-to-warm version: colour temperature shifts from 3000 K to 2000 K as the dimmer comes down, recreating the cozy amber glow of a filament lamp at low levels. The 12 W LED module maintains uniform intensity and produces up to 600 lumens, and the typical
90 CRI renders wood grain, textiles, food and complexions honestly. The fixture lens sets a 38° beam spread — ideal for accenting a counter, a hallway runner or artwork while keeping ceilings free of glare. Both LM79 and LM80 testing back the photometric and lumen-maintenance claims.
Technical specificationsModel: RA35-12F-DTW-90BK
Application: Ceiling Recess Mount
Approved location: Wet / Insulated Ceilings
Wattage: 12W
Lumens: 600
Lumens per watt: 57
CCT: 3000 K~2000 K
CRI: 90
Beam angle: 38°
Input: 100-135V AC, 50 / 60Hz
Dimming: Yes, TRIAC/ELV
Power factor: >0.90
Class II: Yes
Hole cut: Ø 3 5/8" (92mm)
Colour: BK (black trim)
Operating temperature: -20°C~40°C (-4°F~104°F)
Projected life: 70% @ 33,000 hrs
Certification: cETLus
Warranty: Lifetime
Wiring, driver and compatibilityPower comes from an extruded aluminum hardwire box housing a 300 mA dimmable Class II electronic
LED driver with 100-135V AC input. Three "Quick connect" push-in terminals make wiring quick and tidy, and an 18" (457 mm) FT6-rated cable with a DC 2.1 connector links driver to fixture — approved for use in plenums and suspended ceilings. The fixture works with industry-standard
TRIAC/ELV dimmers; LITELINE publishes a compatible dimmer list on its website. Accessories are sold separately and include the P-3520 pre-mounting plate and P-3520NC new construction plate with driver attachment clip for 3½" LUNA LED fixtures, the P-NCMK-1 new construction mounting kit with hanger bars, brackets and screws, the RA35-XLRING-BK black reducer ring, VBE-1 to VBE-4 vapour barrier extenders and the LC-CRTL-DIM-1 smart Wi-Fi dimmer, 120V.
Where it works and what's documentedSuitable for wet locations and approved for direct contact with insulation, this downlight is at home over a shower, under a covered porch or soffit, and in insulated attic ceilings across Canadian climates — the vapour barrier extenders help you keep the envelope sealed. Use it on a dimmer above a dining table, in a bedroom, a hotel corridor, a spa, a restaurant or a boutique where the dim-to-warm effect sets the mood at night. Need other colour temperatures or finishes in the same 3½" platform? Compare the
3.5" LUNA LED round recessed fixture RA35-12F-30K-90WH, the
3.5" LUNA LED round recessed fixture RA35-12F-35K-90BN or the
3.5" LUNA LED round recessed fixture RA35-12F-90WH. The full
spec sheet with dimensions, ordering guide and accessory list is in the Documentation tab.