Built to last, built to install fastThe LUNA 3.5" fixed round downlight is made around a durable airtight fixed
aluminum body with an anodized blue heat sink that keeps airflow moving across the LED light source — the simplest way to protect lumen output and colour over the years. The white trim finish blends into painted drywall ceilings, and the compact footprint of 4 3/8" (111mm) overall with a 3 3/8" (85mm) trim face keeps the visual clutter down. Above the ceiling it only needs 15/16" (34mm) of height at the fixture, so it fits tight joist bays and low plenums where a traditional can never would.
Light quality you can seeThe 12 watt LED module maintains uniform intensity and delivers up to 600 lumens with a typical
CRI of 90, which means truer reds, richer woods and no washed-out faces in the bathroom mirror. The lens produces a 38° beam spread, a controlled distribution that layers nicely on 4 ft centres over counters, islands and hallways without hot spots on the walls. Efficiency lands at 57 lumens per watt with a power factor greater than 0.90, and both
LM79 and LM80 testing are on file for this platform — real data for spec-driven projects.
Electrical and installation detailsAn extruded aluminum hardwire box houses a 300mA
dimmable Class II electronic driver with 100-135V AC input, joined to the fixture by an 18" (457mm) FT6 rated cable 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 mount to any ceiling material. The hole cut is Ø 3 5/8" (92mm). Dimming is
TRIAC/ELV, so it pairs with the standard wall dimmers most homes already have.
Technical specificationsSKU: RA35-12F-40K-90WH
Application: Ceiling Recess Mount
Approved location: Wet / Insulated Ceilings
Wattage: 12W
Lumens: 600
Lumens per watt: 57
CRI: 90
Beam angle: 38°
Input: 100-135V AC, 50/60Hz
Dimming: Yes, TRIAC/ELV
Hole cut: Ø 3 5/8" (92mm)
Power factor: >0.90
Projected life: 70% @ 33,000 hrs
Operating temperature: -20°C~40°C (-4°F~104°F)
Certification: cETLus, Class II
Warranty: Lifetime
Applications, accessories and documentationUse it over a kitchen island, in a walk-in closet, along a hallway, in a condo entryway, in a showroom or in a shower ceiling — it is approved for
wet locations and for direct contact with insulation, so bathrooms, covered entries and insulated attic ceilings are all fair game across Canadian climates. Accessories are sold separately and include the P-3520 round pre-mounting plate and the P-3520NC new construction plate with driver attachment clip for 3 1/2" LUNA fixtures, the P-NCMK-1 new construction mounting kit with hanger bars, brackets and screws, RA35-XLRING reducer rings in black, brushed nickel or white, and VBE-1 to VBE-4
vapour barrier extenders for new construction and remodel work. Want the same housing with colour temperature dimming? Look at the
3.5" Luna LED round recessed fixture RA35-12F-DTW-90WH or the black
3.5" Luna LED round recessed fixture RA35-12F-DTW-90BK. The full technical PDF spec sheet for RA35-12F-40K-90WH is in the Documentation tab for your submittals.