SKU: 41653193285

GROWERS CHOICE ROI-E420 LED Grow Light 420W

Sale price$202.50 Regular price$225.00
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Description

GROWERS CHOICE ROI-E420 LED Grow Light 420WMaximize Growth in Small Scale Cultivation SetupsThe ROI E420 is a full spectrum LED fixture engineered for hobbyists and professional cultivators working in compact grow spaces. With its sleek frame, proven 3K PAR spectrum, and low profile design, this 420W fixture delivers high intensity light without overcrowding your environment. Key Benefits Compact Power OutputCovers 4' x 4' veg and 3. 5' x 3. 5' flower areas with 420W efficiency 3K Full PAR

Maximize Growth in Small-Scale Cultivation Setups
The ROI-E420 is a full-spectrum LED fixture engineered for hobbyists and professional cultivators working in compact grow spaces. With its sleek frame, proven 3K PAR spectrum, and low-profile design, this 420W fixture delivers high-intensity light without overcrowding your environment.


✅ Key Benefits

✔️ Compact Power Output
Covers 4' x 4' veg and 3.5' x 3.5' flower areas with 420W efficiency
💡 3K Full PAR Spectrum
Ideal spectral blend optimized for both veg and bloom stages
📱 Plug-and-Play Simplicity
No apps or extra setup—perfect for beginners and pros
🔌 Low-Profile Build
Sits close to canopy without sacrificing coverage or power
🛡️ Reliable Build Quality
Backed by trusted Growers Choice engineering
🚚 Fast, Free U.S. Shipping
Quick delivery from authorized U.S. warehouses


Why the ROI-E420 Is a Top Choice for Small Grow Rooms

Growers love the ROI-E420 for its balance of performance and size. Whether you’re running a small indoor tent or need a powerful light for side projects, this unit offers efficiency, full-spectrum output, and an easy-to-use design—without the bulk of larger fixtures.


🔦 Feature Highlights

Low-Profile Frame
The sleek housing design allows close placement to plant canopies, making it ideal for grow tents or vertical setups.

Optimized Full Spectrum
Grower’s Choice’s proven 3K PAR spectrum supports vigorous veg growth and dense flowering for high yields.

Versatile Coverage
Covers up to 4' x 4' in veg and 3.5' x 3.5' in flower, perfect for compact gardens or supplemental lighting.


📊 Ideal Applications

  • Grow tents (3' x 3' to 4' x 4')

  • Home hobby grow setups

  • Supplemental lighting in larger rooms

  • Vertical farming systems


⚙️ Maintenance Tips

  • Wipe down lens covers every 30 days to maintain PAR output

  • Avoid exposure to humidity above manufacturer specs

  • Store in a dry, ventilated area when not in use

💡 Optimize Your Setup with the Growers Choice Master Controller
Take your lighting system to the next level by adding the Growers Choice Master Controller. This dual-zone controller manages up to 200 fixtures, enabling full scheduling, sunrise/sunset simulation, and temperature-based auto dim/shutdown. It's the perfect companion for any ROI Series LED or GC CMH setup—offering safety, scalability, and total control in one compact device.

➡️ Add it to your order today for seamless automation and enhanced performance.


Upgrade your compact grow setup with full-spectrum precision. Order the ROI-E420 today and grow smarter in less space.

📦 What's Included

  • 1x Growers Choice ROI-E420 LED Fixture

  • 1x Power Cable

  • 1x Mounting Hardware Set

  • 1x User Guide


📘 Specifications
  • Model Number: ROI-E420

  • Light Source: LED

  • Spectrum: GC-3K Full Phase

  • PPF: 1090 PPF

  • Input Power: 420W

  • Efficacy: 2.6 μmol/J

  • Fixture Dimension / Weight: 35.3” L x 34.6” W x 3.2” H / 19.4 lbs (89.6 cm L x 88 cm W x 8.1 cm H / 8.8 kg)

  • Mounting Height: 6”–24” depending on application

  • Thermal Management: Passive

  • Max. Ambient Temperature: 104°F / 40°C

  • Dimming: 0–10V

  • Light Distribution: 120°

  • Lifetime: L90 >54,000 hours

  • Power Factor: >90%

  • Certifications: UL 8800, UL 1598, IP 65, DLC

  • Warranty: 5 Years Standard Warranty

Max Amperage by Voltage Service

  • 120V: 4.0A

  • 208V: 2.5A

  • 240V: 2.0A

  • 277V: 1.8A


📄 User Manual

Spec Sheet 

User Manual 


❓ FAQ

Q: What size tent does the ROI-E420 work best in?
A: It’s optimized for 4’x4’ veg and 3.5’x3.5’ flower coverage, making it ideal for small tents.

Q: Is this fixture dimmable or app-controlled?
A: This unit does not have app connectivity but features a built-in dimming function via its driver.

Q: What’s in the box?
A: LED fixture, power cable, hanging kit, and user guide.

Q: Can I use this for both veg and bloom?
A: Yes, the 3K full PAR spectrum supports all growth stages.

Q: Does it work with satellite internet?
A: No, Growers Choice fixtures are not designed for use with satellite-based control systems.

Q: What’s the warranty?
A: Backed by a manufacturer warranty (see warranty section below).


🛡️ Warranty

5-Year Manufacturer Warranty covering all LED boards, drivers, and components. U.S.-based support included.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 41653193285

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Darla Hershey
Phoenix, US
★★★★★ 5
Great Read
Format: Paperback
Just started reading it, but seems like it’s going to be very good.
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Reviewed in the United States on October 14, 2025
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Kendall Sholtess
Whiting, US
★★★★★ 5
Excellent tool for gospel workers!
Format: Kindle
For those of us who want to contextualize the gospel in pagan contexts, Dr. Michael S. Heiser helps us get beyond our own cultural context to the ancient cultural context of the Bible itself. One could spend years and years researching the ancient contexts of the Bible, but for workers with families and careers other than Dr. Heiser's, the time needed would far exeed what is practical. Thankfully, there is a solution: Dr. Heiser has done a lot of the distilling needed to grasp the basic cultural and linguistic backgrounds of the Bible writers. After presenting the Unseen Realm, Reversing Hermon and I Dare You Not To Bore Me With The Bible, he has done one better here in the Bible Unfiltered. Why do I say better? Well, I would say that as time has gone on, Dr. Heiser's ability to communicate complex topics for the average layman has improved markedly. Get this book, let it whet your appetite, and then please do get Unseen Realm and Reversing Hermon. They will help you to understand the Bible, contextualize the gospel, and offer an entrance to a fantastic intellectual and spiritual journey of a lifetime.
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Reviewed in the United States on January 3, 2018
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Yamira
Grantham, US
★★★★★ 5
Practical, elegant, and very functional.
Size: Paper Towel Holder - Standard Design
I absolutely loved this paper towel holder. It features a modern stainless steel design that looks beautiful in the kitchen and matches everything. The base is quite heavy, so it doesn't slide around or tip over when you tear off a sheet—which is incredibly important. The addition of the spray bottle is an excellent bonus. It’s perfect for keeping water, vinegar, or a cleaning solution close at hand, allowing you to do a quick cleanup while you’re cooking or wiping down the countertops. Plus, it’s easy to refill and use. Another feature I appreciated is the side arm, which helps keep the roll in place and prevents it from unraveling on its own. It is well-made and durable. Overall, it is a very practical product that saves space and makes things much more convenient in the kitchen.
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Reviewed in the United States on March 29, 2026
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Nel
Carnegie, US
★★★★★ 5
Nice and handy!
Size: Paper Towel Holder - Standard Design
Needed a sturdy paper towel holder for one hand operation. This fit the bill. I really like that I can just put some cleaner of choice in the middle to always have on hand; makes clean up a breeze. Would definitely recommend!
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Reviewed in the United States on May 11, 2026
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Amazon Customer
Louisville, US
★★★★★ 4
It works
Size: Paper Towel Holder - With Phone Holder Design
It's great for what it is. I love the spring arm that holds the towels from unraveling. It does keep the towels from in raveling. That's the reason I bought it. The only thing I don't like about it is the spray bottle on the top. I'm not saying it's a bad thing. I didn't think I'd use the phone holder and made fun of it. But I actually used it and liked the fact that it did its job well. I just don't like it nor will I use it. The spray bottle is the reason for 4 stars
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Reviewed in the United States on September 28, 2025

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