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Growers Choice ROI-E420 LED 420 Watt 3K Grow Light

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  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow
  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow
  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow
  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow
  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow
  • Image of Growers Choice ROI-E420 LED 420 Watt 3K Grow

Growers Choice ROI-E420 LED 420 Watt 3K Grow Light

List Price: $699.00
Price: $599.00

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Guaranteed Delivery: 01/19 - 01/19
Protection: 3 Year Extended Warranty
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Growers Choice ROI-E420 LED 420 Watt 3K Grow Light

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List Price: $699.00
Price: $599.00

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        • Coverage Area
          Veg: 6' x 6'; Flower: 5' x 5'
        • Exact Watts
          680 Watts
        • Voltage
          120/277 Volt
        • Est. Electricity Cost /mo
      • Warranty
        3 Year

Introducing the ROI-E420 Horticulture LED System by Grower's Choice. This high performance and cost-effective lighting solution for commercial and home horticulture is now available. 

The ROI-E420 is controllable with the Grower's Choice Master Controller and is compatible with all quality master controllers. Cultivators can set the fixture to turn on and off at desired times, program sunrise/sunset settings, program dimming options, and set protective fail-safes to dim or turn off the fixture in the event of excessive room temperatures, such as in the event of an HVAC failure, potentially saving gardens from heat damage.


  • 420W power draw
  • 2.6 umol/j efficacy
  • 1090 umol/s total light output
  • Up to 4'x4' (16 sq ft) coverage area 
  • GC-3k Full Spectrum with 660nm deep red (Osram diodes)
  • Onboard dimming function 0-10v
  • Compatible with Grower's Choice Master Lighting controller 
  • Even light distribution
  • Fanless Design
  • IP65 Waterproof
  • UL8800, UL1598, DLC, and CE certification
  • 3-year warranty 


Wattage draw at the wall: 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:

    • Flower: 3' x 3' to 3.5' x 3.5'
    • Veg: 4' x 4' 

    Mounting height: 6"-24" above canopy

    Dimensions: 35.3” L x 34.6” W x 3.2” H

    Cooling: Passive

    Dimming: Dimmable on 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

      We work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price then us within six months of your purchase date please let us know and we will refund your original payment for the difference.  We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date we will refund the difference as well.

      To request a partial refund simply e-mail us with a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

      Our 100% Price Guarantee has some limitations:

      • You must purchase the item from our website before requesting your Price Match Guarantee
      • Promotions such as rebates and buy one, get one free offers are not eligible
      • The item must be in stock on the competitors website
      • The competitor must be an online store, they may not have a retail location
      • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
      • The competitor must be an Authorized Retailer of the product in question
      • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax
      Products purchased through West Trading House may be returned within 30 days from your original purchase from our web site with Authorized Return Label. Items must be returned in their original product packaging. West Trading House will process a credit to your credit card. A 25% re-stocking fee will be applied on all returns. You must follow the West Trading House return procedure below to receive a credit.

      Click here to see how to return

      Customer Reviews

      Based on 2 reviews
      Jacques Griffin

      I give it a 4.5. Really easy-to-use use, versatile, and definitely more than handles my 4x4 in veg AND flower. I already have plans for the ROI E720 next.

      Great seller

      Excellent service , Great prices with fast shipping .
      Thank you .

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