Greenhouse LED Grow Lights

IP65 is the specification most greenhouse fixtures claim. IP66 is what commercial greenhouse environments actually require. The difference: IP65 protects against low-pressure water jets from any direction. IP66 protects against powerful water jets - which is the actual condition in commercial greenhouses with overhead irrigation, misting systems, and high-pressure cleaning protocols.

We specify IP66 as standard because greenhouse environments involve high-pressure cleaning and continuous moisture exposure. - not immediately, but progressively, as seals degrade from repeated high-pressure exposure. A fixture failure during a critical crop window in January is not a warranty conversation - it's a production loss. IP66 from the start prevents it.

Commercial greenhouse bays are typically 6.4 m, 9.6 m, or 12.8 m wide. Mounting heights for top lights range from 3 to 6 metres. At a 4 m mounting height with a 90° beam angle, effective coverage width is approximately 7 m - adequate for a 6.4 m bay with minimal overlap but creating significant edge drop-off in wider structures. At 120°, coverage width at 4 m mounting height extends to approximately 13 m - sufficient for proper overlap and uniformity in most standard bay widths.

Our top LED grow lights for greenhouse applications are manufactured with 120–140° beam angle as standard. We don't offer a narrow-beam version for greenhouse top-light applications because the geometry doesn't work - and we'd rather tell you that upfront than sell you the wrong product.

Commercial greenhouses in Northern Europe, Canada, and northern US states experience ambient temperatures from below 0°C in winter (before heating activates fully) to above 40°C in summer. Fixtures rated for 0–40°C operating range are at the edge of these conditions. Our LED greenhouse lights are rated for −10°C to 45°C - designed for the full range of conditions in commercial greenhouse environments, not for the controlled temperature of an indoor grow room.

In a greenhouse supplemental lighting application, fixture intensity needs to respond to natural light variation - reducing output when solar irradiance is high, increasing it when clouds reduce natural PPFD below target. This requires 0–10V continuous dimming compatible with light-sensing climate control systems, not just manual or scheduled dimming.

Fixtures with on/off switching or step-only dimming cannot respond to real-time solar variation. The result is either over-lighting on bright winter days (unnecessary energy cost) or under-lighting on overcast days (DLI shortfall). All our supplemental greenhouse lighting products support 0–10V continuous dimming as standard.

n a greenhouse supplemental lighting system that runs October through March (6 months/year) for 16–18 hours/day, a fixture reaches approximately 25,000 operating hours in 8–9 years. A fixture rated at L70 over 50,000 hours will have dropped to 70% of initial output by year 8–9 - meaning your supplemental PPFD contribution is 30% lower than when you designed the system, without any obvious failure to alert you.

We specify L90 across our greenhouse LED grow lights range - 90% of initial output maintained over 50,000 hours. The DLI contribution you designed the system for is the DLI contribution you'll still have at the end of the fixture's commercial life.