Treegers GL420W LED Grow Light Fixture | 420W | 1155 μmol/s | IP66

Treegers GL420W — Professional LED Grow Light Fixture

Built for serious growers who demand maximum yield, minimum waste. The GL420W delivers 1155 μmol/s PPF at a remarkable 2.8 μmol/J fixture efficacy — covering up to 1.2 × 1.2m with industry-leading uniformity across every point of the canopy.

Why Growers Choose the GL420W

• ✅ Market-leading uniformity — hybrid optical lens design distributes light evenly across the full footprint, no hot spots, no dead zones
• ✅ IP66 rated — fully sealed against dust and high-pressure water jets; built for real grow room conditions
• ✅ Plug & play simplicity — 6-bar compact design installs in minutes, no electrician required
• ✅ Passive cooling — high-grade heat sinks, zero moving parts, zero noise, extended lifespan
• ✅ Full-Spectrum Fusion — optimised spectrum for all growth stages, from veg to late flower
• ✅ 3-year warranty — backed by Growers Depot AU

Technology & Design

The GL420W uses a revolutionary multi-linear 6-bar LED architecture with premium high-efficacy diodes (up to 4.2 μmol/J) driven by industry-leading LED drivers. High-grade aluminium heat sinks and fully passive thermal management ensure every component runs cool and lasts longer — protecting your investment for 60,000+ hours of operation.

All LED bars are coated in an innovative silicone resin protection layer — smooth, non-sticky, and easy to wipe clean. Watertight cable connections throughout.

Precision Dimming & Smart Control

Dial in your DLI with 10-step dimming (0–100%) via the Treegers Precise T Dimmer (0–10V), or integrate with the Treegers Growcast or any universal 0–10V controller for full automation. Perfect for multi-light grow rooms and tiered lighting schedules.

Full Specifications

• Model: GL420W
• Power Consumption: 420W ±5%
• Light Output (PPF): 1155 μmol/s
• Fixture Efficacy: 2.8 μmol/J
• Diode Efficacy: Up to 4.2 μmol/J
• Coverage Area: 1.0×1.0m (min) — 1.2×1.2m (max)
• Spectrum: Full-Spectrum Fusion
• LED Bars: 6
• Thermal Management: Passive Cooling
• Input Voltage: 120–277V, 40/50 Hz
• Ingress Protection: IP66
• LED Bar Lifespan: 60,000+ hours
• Dimming: 0–10–20–30–40–50–60–70–80–90–100% (via Treegers Precise T Dimmer 0–10V)
• External Control: Treegers Growcast or any Universal 0–10V Controller
• Light Distribution: 120°
• Fixture Dimensions: 680 × 700 × 42 mm
• Fixture Weight: 5.08 kg
• Carton Dimensions: 755 × 97 × 735 mm
• Gross Weight: 6.68 kg
• Certifications: CE, UKCA, RCM, RoHS, SAA
• Warranty: 3 Years
• EAN/GTIN: 9309001188047

SQD Spectrum Graph

What's In The Box

• 1 × GL420W LED Fixture (6 LED Bars, Integrated Driver & Frame)
• 1 × Power Cable (1.8m length, plug & Jnicon connector)
• 2 × Stainless Cable Hangers (D2 × 105mm)
• 1 × User Guide

Questions? Our grow light specialists are here to help. Contact Growers Depot AU before you buy.