HLG Refurbished HLG 350R
HLG Refurbished HLG 350R
HLG Refurbished HLG 350R

Refurbished HLG 350R

Regular price$557.00 CAD

Power Cord

Refurbished Lamps are tested and fully functional with HLG original components. May have Scratches and/or may have been previously used.

HLG 350R commercial indoor horticulture LED grow light is designed to replace a 600 watt HID with just 330 Watts. Each HLG 350R uses 2 of our custom designed full spectrum high efficiency Diablo Quantum Boards® with Samsung LM301H and LM351H Deep Red . With a rectangular footprint this fixture is ideal for flowering in smaller grow spaces or vegging in a commercial grow.

Independent Efficiency Lab Report

Independent PPFD Report*

*Expect higher intensity and more even coverage in a grow tent, reflective area or a cross over with multiple lamps.


Top Features

  • 35" wide design for even light coverage
  • Powered with high efficiency Diablo Quantum Boards® for 2.9 PPF/W
  • 970 PPF high output to replace even 600W HPS
  • Quantum Board® QB648 made by Samsung
  • Full spectrum white and 660nm red
  • Reliable passive-cooled design
  • Better canopy light penetration with diffused light
  • 60 to 330 Watts Dimmable design
  • Auto sensing Inventronics power supply works on both 120VAC and 240VAC and 277VAC
  • 1 Year Warranty



Power 60-350Watts
Voltage Range 100-277 VAC 50-60Hz
LED Samsung LM301H & Deep Red
Flowering Footprint 3' x 5' at 15"
Veg Footprint 5' x 5' at 24”
System PPF Efficacy 2.9 μmol/joule
Total output 970 PPF
Dimensions 34.5" x 10" x 2.75"
Recommended Mounting Height 15" - 24" above canopy
Certifications UL 8800, UL 1598, CSA

Watts to BTU Calculator, Cooling Requirement Calculator
ETL Listed

UL 8800, UL 1598
Certified to CSA Std C22.2#250.0


All domestic orders ship in 1-4 business days. International orders ship in 5-10 business days.

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Customer Reviews

Based on 19 reviews
Always go with HLG, fantastic quality and unmatched customer support!

I went down the list of budget recommendations from online suggestions. Just trying to get by in the 2x4. Once again Im reminded that its beat to buy once cry once. The cost difference for the HLG is worth it to me because Im investing in people too. They have not only never failed me when needing help but have exceeded my expectations. Thank you!!!

Shawn Maxwell
Customer Service

I own several HLG lights, each are fantastic. I have purchased both new and refurbished. I was already in possession of a 350R I purchased new about a year ago and when the refurbished unit arrived, it had different wiring that didn’t allow my to daisy chain the lights together. I called thinking I was going to end up returning the light, but HLG took time to look at the refurbished lights they had in stock. When HLG learned I was trying to match an existing light, they gave me the option of the flat panel vs the reflector, ensured that the light spectrum was the same and sent the light to the workshop to be retrofitted with the correct wiring. By week’s end I had a replacement light that matched. Above and beyond. Thanks much for taking the time to listen and help.

Great stuff

As expected highest quality.

David Woodall
Awesome company

There are other leds brands out three. With that said, I would not purchase lights from another manufacturer.

Sean Schrader
Great Investment

I spent 3 years looking for the best before coming to an obvious conclusion HLG makes the best lights. I am VERY HAPPY and thrilled to be an owner of a Diablo.
Thank You for great product and service!