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

Full-Spectrum Fusion | 2.8 μmol/J | IP66

SKU: LEDL24011

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Maximize your yields with this unique LED grow light. Providing industry-best uniformity with coverage of up to 1.2 x 1.2m. With six LED bars and an outstanding compact plug-and-play design, our GL420W delivers optimal light distribution and light penetration for your crops.


Full-Spectrum Fusion

Perfectly balanced and meticulously tailored for indoor cultivation. Designed to support every stage of plant life with combinations of 4000K, 5000K & 660nm diodes to ensure optimal plant health and hefty harvests. Full-Spectrum Fusion, used on our GL series of LEDs, is well-balanced and a perfect choice for Full-Cycle growing. Its total CCT and wavelength ratios also make it an optimal choice for Propagation, Clones, Mothers and Vegetative stages.

Technology & Design

Innovative and revolutionary multi-linear plug-and-play design 4 Bar LED. Quality, high-performance LED diodes with industry-leading LED drivers, provide the ultimate in performance and reliability. High-grade heat sinks and optimal passive cooling throughout fixtures, ensures the extended lifespan of all components, preventing premature diode decay.

Usable Photon Efficacy

Extremely high light output with fixture efficacy of up to 3.1 μmol/J, utilizing diodes with an efficacy of up to 4.35 μmol/J on the GL+ fixtures. Treegers LED fixture technology offers remarkable usable efficacy across each point of the light footprint/coverage area.


By using a combination of strategically placed LED diodes and optical lenses, our unique hybrid designs provide market-leading uniformity, distributing light evenly across the whole canopy/coverage area.

IP66 & Smooth Resin Coating

Treegers LED fixtures are rated at IP66. Meaning full protection against high-pressure water jets (12.5mm) and total dust ingress. Utilizing innovative silicone resin protection on all diodes and watertight connections on all cables. Our unique coating, besides providing optimal protection for all LED bars, also ensures a smooth surface, with reduced stickiness making it very easy to clean.



  • Product Code: TGL0002
  • EAN/GTIN: 9309001188047
  • Power Consumption: 420W ±5%
  • Light Output PPF: 1155 μmol/s
  • Fixture Efficacy: 2.8 μmol/J
  • Diodes Efficacy: Up to 4.2 μmol/J
  • Coverage Area: Minimum 1.0x1.0m up to Maximum 1.2x1.2 m
  • Thermal Management: Passive Cooling
  • Input Voltage: 120-277V, 40/50 Hz
  • Ingress Protection: IP66
  • LED Bars Lifetime: +60,000 Hrs
  • Dimming: 0-10-20-30-40-50-60-70-80-90-100% (with Treegers Precise T Dimmer 0-10V)
  • External Control: with Treegers Growcast or any Universal Controller
  • Light Distribution: 120º
  • Fixture Dimensions: 680x700x42 mm
  • Fixture Weight: 5.08 Kg
  • Carton Dimensions: 755x97x735 mm
  • Gross Weight: 6.68 Kg
  • Certifications: CE, UKCA, RCM, RoHS, SAA
  • Warranty: 3 Years
  • Spectrum: Full-Spectrum Fusion

In The Box

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

2-Years + 1-Year Extended Warranty

  • If the product is faulty within the warranty period, the product will be replaced with a new one.
  • Please send the product to the following address on the contact us page