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The 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 Diodes. With a rectangular footprint this fixture is ideal for flowering in smaller grow spaces or vegging in a commercial grow.


What's Included?

  • HLG 350R LED Grow Light
  • Power cord (120V)
  • Dimmable Driver Options:
    • Manual Dimming Knob
    • RJ Ports for external controller
  • Light Hangers

Features of the HLG 350R LED Grow Light

The HLG 350R is powered with high efficiency Diablo Quantum Boards for 2.75 PPF/W


HLG is known for its Quantum Boards, the world's highest efficiency light engines, and using top-notch LEDs, but these are just a few examples of what makes the HLG 650R one of the best commercial grow lights available. The 660nm red light gives your plants that extra boost during the flowering stage to really round out the effectiveness of this fixture.

  • 35" wide design for even light coverage
  • Powered with high efficiency Diablo Quantum Boards for 2.75 PPF/W
  • 911 PPF high output to replace even 600W HPS
  • Quantum Board QB 648 made by Samsung
  • Top Bin Samsung Diodes
  • 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
  • 3 Year Warranty


Full-spectrum light suitable for all stages of growth

The HLG 350R produces light with a kelvin temperature of around 4000K. This range contains enough blue light to keep your plants happy and healthy during their vegging stage and well as enough orange and red light to take you all the way through the flowering stage. HLG provides an additional range of 660nm deep red to help give a huge boost in the flowering stage to produce bigger yields with higher potency.


PPFD Maps for the HLG 350R in a 5' x 5' grow area at 15" and 24".

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

HLG 350R 350W LED Grow Light

$599.00 Regular Price
$549.00Sale Price
  • Brand

    Horticulture Lighting Group

    SKU HLG-350R-350W
    Lighting Type LED
    LED Light Spectrum Full Spectrum
    LED Fixture Type Panel
    LED Features

    Manual Dimming Knob, Dimmable *with Controller

    Est. Electricity Cost /mo $15.12
    Exact Watts 350 Watts
    HID Equivalent 600 Watts
    Suggested Hanging Height

    15" - 24" above canopy

    LED Diode Type

    Samsung LM301H & Deep Red

    LED Driver Type

    Inventronics Driver

    PAR Efficiency 2.75 μmol/j
    Total PPF Output 911 µmol/s
    Frequency 50/60 Hz
    Power Cord(s) Included Yes
    Power Cord Length 8 ft.
    Coverage Area

    Veg: 5' x 5'; Flower: 3' x 5'

    Grow Light Certifications

    ETL Listed, UL Listed, CSA Listed

    UL Listed Yes
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