Built like a tool, finished like a trimThe LUNA 3.5" starts with a durable airtight fixed
aluminum body — no plastic can, no rattles. Inside, an anodized blue heat sink keeps air moving around the LED light source, which is exactly how a compact
LED recessed fixture holds its output year after year instead of fading in a warm, insulated ceiling. The trim finish on this SKU is BK (black), part of a family that also includes Brushed Nickel, Silver and White. At 4 3⁄8" (111 mm) across and 3 3⁄8" (85 mm) deep, it slips into tight joist bays and low plenums where a 5 or 6 inch can simply won't go.
Light quality you can seeThe 12 watt LED module produces up to 600 lumens with a uniform intensity across the lens and a typical
CRI of 90, so colours stay honest under it — a real difference in kitchens, bathrooms, boutiques and galleries. The lens delivers a
38° beam spread, a controlled cone that works beautifully in rows over counters, in hallways, or aimed down a feature wall. Dimming is handled by
TRIAC/ELV control with standard dimmers, and LM79 and LM80 testing means the photometric and lumen-maintenance claims are measured, not guessed. Projected life is 70% output at 33,000 hours.
Technical specificationsApplication: 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
Power factor: >0.90
Class II: Yes
Hole cut: Ø 3 5⁄8" (92 mm)
Dimensions: 4 3⁄8" (111 mm) x 3 3⁄8" (85 mm)
Operating temperature: -20 °C~40 °C (-4 °F~104 °F)
Certification: cETLus
Projected life: 70% @ 33,000 hrs
Warranty: Lifetime
Trim finish: BK (Black)
Wiring and installationThe driver lives in an
extruded aluminum hardwire box with a 300 mA dimmable Class II electronic LED driver, 100-135V AC input, and three "Quick connect" push-in terminals that turn wiring into a few seconds of work. An 18" (457 mm) FT6 rated cable with a DC 2.1 connector links the driver to the fixture and is approved for use in plenums and suspended ceilings — handy for commercial retrofits. Two spring-loaded clips hold the housing in any ceiling material, making this a true
retrofit downlight for a Ø 3 5⁄8" (92 mm) hole. Accessories are sold separately: the P-3520 round pre-mounting plate and the P-3520NC new construction plate (both with driver attachment clip, for 3½" LUNA LED fixtures), the P-NCMK-1 new construction mounting kit with hanger bars, the RA35-XLRING-BK reducer ring for 3½" LUNA fixtures, and VBE-1 to VBE-4
vapour barrier extenders for new construction and remodel work.
Where to use it, and what to readThink tight, purposeful light: a grid of downlights over a kitchen island, a soffit line on a covered porch, shower and vanity lighting in a bathroom, corridor lighting in a condo, accent runs in a café or clinic. Because it is suitable for wet locations and approved for direct contact with insulation, it handles humid and insulated ceilings that defeat lesser fixtures. Match finishes across a project with the
RA35-12F-90WH or the
RA35-12F-40K-90BN in brushed nickel, or pair with the
dim-to-warm RA35-12F-DTW-90WH in living spaces. The full technical PDF spec sheet is in the Documentation tab — check the hole cut, dimensions and dimmer compatibility before you cut a single ceiling.