Slim 2.25-inch indirect/direct architectural linear luminaire with two replaceable light engines, published at 392–1,104 lm/ft across four output packages.
| Luminous flux | 392–1104 lm/ft |
|---|---|
| Color temperature (CCT) | 3000K / 3500K / 4000K |
| CRI | ≥80 |
| Mounting | Suspended / pendant (aircraft cable), Wall mount (surface or bracket) |
| Dimensions | 2.25 in wide × 4 in tall profile; standard 4 ft and 8 ft sections combined into continuous runs (8 ft maximum continuous shielding) |
| Distribution | Indirect/Direct |
| Finishes | Signal White, Finelite Black (RAL 9005), Satin Aluminum, Custom RAL (179 colors) |
| Dimming | 0–10V 100%–10% standard; dimming to 1% available; Lutron Hi-lume 1% EcoSystem driver option |
| Rated environments | Damp location, Chicago Plenum option |
| Rated lifetime | 60,000 h |
| Warranty | 10 years |
Specifications sourced from the manufacturer's datasheet . Verify against the current revision before specifying.
Finelite's Series 18 LED is a slim-profile rectilinear indirect/direct linear luminaire built on a 2.25-inch-wide by 4-inch-tall housing with two replaceable mid-power LED light engines (the 2E system) delivering both uplight and downlight. Four output packages — Standard, Boosted Standard, High, and Very High — publish 452–1,104 lm/ft with the standard open uplight optic and 392–958 lm/ft with the Frosted Top Optic, measured at 4 ft, 3500K, 80 CRI. Static-white 3000K, 3500K, and 4000K selections are offered in 80 or 90 CRI. Standard 4 ft and 8 ft sections combine into continuous runs, with continuous diffuse shielding to a maximum 8 ft (7 ft 9 in visible). The luminaire suspends on 50-inch fully adjustable aircraft cable (semi-adjustable and flexible-mounting brackets optional) or mounts to a wall via surface mount or a concealed mounting bracket. A replaceable 120V/277V 0–10V driver dims 100%–10% standard (1% and Lutron Hi-lume EcoSystem options), and the fixture is damp-location listed with a Chicago Plenum option. Series 18 carries a 10-year warranty, publishes L90 maintenance at 60,000+ hours, and is enrolled in the ILFI Declare 2.0 program with Red List Approved and Declared options.
Pick from Series 18's published options to compose a copyable, submittal-ready specification. All choices come from the manufacturer datasheet — confirm the final build against the current revision before ordering.
Submittal summary
Insight Lighting · Linear
Architectural linear suspended direct/indirect luminaire with an elegant curved profile, in 6 lengths from 33.5" to 92.25" delivering 2,328–9,500 total lumens at up to 128 LM/W.
Insight Lighting · Linear
Suspended direct / direct-indirect linear on a 0.125" precision-bent-aluminum tubular profile in six lengths (34"–92") — 82 CRI (optional 90) white light, 19–81 W delivering up to 4,314 delivered lumens.
Axis Lighting · Linear
Ultra-slim semi-direct architectural linear family — up to 1000 lm/ft at 125 lm/W, 80/90 CRI, tunable-white and BIOS options, in 2–12 ft sections and continuous system runs.
