LED Tri-Proof Light (Vapor Tight) — Tech Spec

"Tri-proof" means waterproof, dust-proof, and corrosion-proof — or at least it should. These are the linear fixtures you see in parking garages, food processing plants, cold storage, car washes, tunnels, and industrial kitchens. The housing is a sealed polycarbonate tube with a gasketed diffuser and external stainless steel clips. If you need a light that can survive being hosed down or sitting in a -25°C freezer, this is it.

Core Specs

Wattage: 18W / 24W / 30W / 36W / 44W / 55W / 65W. The 36W in 1200 mm is the standard for parking garages and general industrial.

Lengths: 600 mm (18–24W), 1200 mm (30–44W), 1500 mm (55–65W). 1200 mm is the volume seller.

Input: AC 100–277V, 50/60 Hz.

Efficacy: ≥ 120 lm/W standard at 4000K/5000K. ≥ 110 lm/W with the emergency battery pack (the battery circuit adds some parasitic draw and slightly reduces system efficacy).

CRI: ≥ 80 standard, ≥ 90 on request. Most tri-proof applications don't need high CRI — the priority is robustness, not color rendering.

CCT: 4000K / 5000K / 6500K. 4000K for parking and general spaces, 5000K for inspection and work areas, 6500K for cold storage (the bluer light counteracts the "warm dim" perception people get in cold environments — it's psychological, not photometric).

Beam angle: 120° with opal diffuser, 90° with clear ribbed diffuser. The clear ribbed gives about 5–8% more output but you can see individual LED dots — fine for a parking garage ceiling, less so for a food prep area.

IP rating: IP65 standard, IP66 with enhanced sealing. The difference is the gasket compression spec and the cable gland rating. For anything that gets direct water jets (car wash, food processing wash-down), go IP66.

IK rating: IK08 standard — the PC housing can take a hit. IK10 available with a reinforced housing or aluminum-frame hybrid construction.

Housing: UV-stabilized polycarbonate, anti-yellowing grade. All-PC housings are lighter and cheaper. Hybrid versions with an aluminum frame + PC diffuser are sturdier and dissipate heat better — worth the premium in high-ambient applications where the extra thermal margin extends driver life. Standard color is grey, milky white available.

Clips: Stainless steel 304, included. Two clips per fixture, plus one additional per extra 600 mm of length. Mount to ceiling or wall. The clips grip the housing, not the diffuser — you can remove the diffuser to clean or replace the LED strip without unclipping the whole fixture.

Cable entry: End-cap cable gland, PG9 or M20. Rear knockouts also available. Through-wiring is standard — 3×1.5 mm² terminal block, loop-in/loop-out. Maximum fixtures per circuit depends on the driver inrush current, but typically 8–10 units before you need to split the circuit. We'll calculate it for your layout.

LED chips: Bridgelux standard, Philips Lumileds PRO, Sanan for cost-optimized.

Driver: Internal, sealed within the IP65 housing. MOSO standard, Meanwell on request. The driver runs warm inside a sealed tube — we spec a driver with a higher Tc rating than our indoor products to compensate. If you're putting these in an unconditioned parking garage in a hot climate, the Meanwell upgrade provides worthwhile thermal headroom.

Dimming: Non-dim, 0-10V, DALI-2. Dimming on tri-proof fixtures is less common than on indoor products because the applications tend to be 24/7 or on-off via a timer. But if you need it, we can do it.

Sensor: External microwave motion/daylight sensor — IP65 rated, cable-connected to the fixture. The sensor mounts separately because embedding it in a sealed PC tube would compromise the IP rating. The sensor triggers dimming per fixture or in groups.

Emergency: Internal LiFePO4 emergency battery pack — 3 hours, self-test or manual test. Adds about 0.5 kg to the fixture weight. The battery is field-replaceable.

Power factor: ≥ 0.95. THD < 15%.

L70: ≥ 50,000 hrs at Tc 75°C.

Operating temp: -30°C to +45°C standard. With the emergency battery, the low end is -25°C because the LiFePO4 battery chemistry slows down below that. For cold storage at -25°C to -40°C, tell us — we spec a cold-rated driver with a lower startup temperature and verify the PC housing doesn't become brittle at those temperatures.

Warranty: 3 years standard, 5 years PRO.

Certifications: CE, RoHS, CB. ENEC and VDE on request.

Application notes

For parking garages: through-wire in continuous rows, 4000K, opal diffuser, spacing about 1.5× the mounting height between rows. Mounting height is typically 2.4–2.8 meters — the ceiling is low, so uniformity matters more than raw output. A 36W every 3–4 meters usually does it.

For cold storage (-25°C): the LED loves the cold — efficacy actually improves. The driver and the PC housing are what you need to worry about. Make sure the driver is cold-rated (-40°C startup), and make sure the PC grade is specified for low-temperature impact resistance. Standard PC becomes brittle below -20°C. We use a cold-grade PC for all sub-zero orders.

For food processing: IP66, stainless steel clips (304 minimum), no external sensor (hygiene — fewer crevices for bacteria), and a smooth external surface that can be wiped down. If the space uses hot water and detergent for cleaning, IP69K is theoretically the right rating — tell us and we'll check if we can meet it with this housing platform or if we need to go to a different product line.

For car washes and tunnels: IP66, stainless steel clips and cable glands, vibration-resistant mounting. Car washes are the worst-case combination of water, detergent, humidity, and vibration. We've had fewer field failures by upgrading the cable gland to stainless steel and adding a second breather valve on longer fixtures.

Ordering

LFL-TP-[wattage]-[length]-[diffuser]-[CRI]-[CCT]-[options]

LFL-TP-36W-1200-OPAL-CRI80-4000K-EM-SS

→ 36W, 1200 mm, opal diffuser, CRI 80, 4000K, with emergency + stainless steel clips

Tell us where it's going — parking garage, freezer, kitchen, tunnel — and we'll make sure you get the right housing, driver, and clip configuration. The base fixture is the same, but the details change by application.