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LED Grow Light - ROI-E420 by Grower's Choice (for 4'x4' area )

Grower's Choice

  • $ 64900
  • Save $ 50

The ROI-420 LED grow light by Growers Choice is a high performance and affordable LED Grow light solution for home and commerical growing.  The ROI-E420 LED grow light is the perfect light for a 4x4 or 3.5x3.5 grow tent, and provides a fully balanced spectrum to take your plants from seedling to harvest!

  • Super Efficient: Total output of 1090 μmol/s and a wattage draw of 420 watts, the ROI-E420 has a 2.6 μmol/J system efficacy. So you save about  40% on electricity costs compared to HID not to mention it can cut cooling requirements by up to 40%.
  • User Friendly Control: The dimming feature lets you adjust the light output down from 0-10V when plants don’t need the full power, which allows you to take plants from seedling to harvest with one LED grow light.
  • Even Light Distribution: The LED bars are evenly distributed and the light from the fixture travels evenly across the grow space.
  • 3-Year Warranty & Safety Certified: Rugged, waterproof housing makes it ideal for use wet and humid environments.  Backed with a 3-year warranty.
  • Controller Compatible: Use the Grower's Choice, or any high end Master LED lighting controller for ultimate control.

The precision developed GC-3K full phase spectrum fills the gap of traditional LED grow lights, and is very close to natural sunlight. This enhanced spectrum provides all the blues, boosts of red, and UV to meet all your plants needs during both Veg and Flower phases, which leads to increased yields over traditional LED grow lights.

The ROI-E420 is recommended for a 4'x4' footprint at a height of 6-24" above the canopy for vegetative phases, and 8" is recommended for the flower phase.


The ROI-E420 LED grow light is certified to  ETL, CE certification, and IP65 waterproof standards, and includes a 3-year factory warranty from Growers Choice.


  • Wattage draw: 420 watts
  • HPS equivalent: 800w
  • LEDs: Osram LEDs; 54,000-hour lifespan until L90
  • Spectrum: GC-3K Full Phase; Full spectrum with 660nm deep red
  • PPF (light output): 1090 umol/s
  • PPF/Watt: 2.6 umol/j
  • Beam angle: 120°
  • Coverage area: 3' x 3' (Flowering) to 4' x 4' (Vegging)
  • Mounting height: 6-24" above the canopy
  • Dimensions: 35.3” L x 34.6” W x 3.2” H
  • Cooling: Passive
  • Dimming: Dimmable on the unit, more controllability with controller (not included)
  • Operating temperature: -20°C to +45°C
  • Operating/input voltage: 110-277v AC
  • Amperage: 120V: 4.0A / 208V: 2.5A / 240V: 2.0A / 277V: 1.8A
  • Product weight: 19.4 lbs
  • Additional details: IP65; UL8800, UL1598, DLC, and CE certification
  • Recommended for: Home grows, Commercial grows, Grow rooms, Tents
  • Manufacturer's Warranty: 3 years full

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