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Horticulture Lighting Group HLG 350R Full-Spectrum LED  - LED Grow Lights Depot
Horticulture Lighting Group HLG 350R Full-Spectrum LED  - LED Grow Lights Depot
Horticulture Lighting Group HLG 350R Full-Spectrum LED  - LED Grow Lights Depot

Horticulture Lighting Group HLG 350R Full-Spectrum LED

$499.00 $599.00
  • Availability: In stock.
    • Free shipping in the USA (lower 48 states)
    • Free shipping to Canada (excludes taxes)
    • Ships discreetly in 1-2 business days

    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) HLG 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.

    Updated Aug 1, 2021: 1011 umol/s and  3.11 umol/J.


    Top Features

    • 35" wide design for even light coverage
    • 3.11 PPF/W
    • 1011 PPF high output to replace even 600W HPS
    • Powered with high-efficiency Samsung Diablo™ QB648 Quantum Boards®
    • 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





    (These are PAR maps from the previous version of the HLG 350R. The light output has been increased to 1011 umol/s (5% increase) in this new version.)

    15" height, 6" square grid

     24" height, 6" square grid

     More information




    Wattage draw: 330 watts (down to 60 watts)

    HID equivalent: 600W HID replacement

    LEDs: Samsung LM301H & LM351H Deep Red

      PPF: 1011 umol/s

      PAR efficacy: 3.11 umol/j

      Coverage area:

      • Veg: 5' x 5' at 24”
      • Flower: 3' x 5' at 15"

      Mounting height: 15" - 24" above canopy

      Thermal management: Passive cooling

      Dimensions: 34.5" x 10" x 2.75"

      Operating/input voltage: 100-277 VAC 50-60Hz

      Amperage: 2.91A @ 120V

      BTUs: 1126

      Certifications: UL 8800, UL 1598

      Product includes:

      • Fixture with NEMA 5-15P plug/cord and plug
      • Dimmable Inventronics driver
      • Hangers

      Recommended for:

      • Grow tents
      • Grow rooms
      • Large indoor grows
      • Vegetative growth and/or flowering
      • Full-cycle growing from seedling to flower
      • Soil, hydroponic, aeroponic, or aquaponic systems

      Manufacturer's warranty: 3-years

      Shipping / Cancellations / Returns

      Order Confirmation

      As soon as you place the order, an order confirmation will be emailed to you. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for immediate shipment (1-3 business days) we will submit the order for processing and arrange shipment.

      Order Shipment

      Most products ship within 1 to 3 business days from the date of your order (unless indicated on the product page). Some items take a bit longer to ship since they are built to order (i.e., Timber Grow Lights, ChilLED Tech, Trimmers, etc). We will send you tracking information as soon as it is available. 

      U.S. Shipping

      We are based in Portland, Oregon with warehouses nationwide. We offer FREE shipping in the lower 48 states (sometimes to HI and AK, too) via FedEx, UPS, USPS or other major couriers (product/brand dependent). Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method and we will get you a quote.

      After the order is processed, allow 2 to 7 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to PO boxes in some cases. We recommend using a street/residential address instead.

      International Orders

      Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, please email us to receive a shipping quote for lights shipped outside of the USA. You may also place an order on our online store for items that require a quote and we will notify you via email on the exact shipping costs. 

      Some items/brands can be shipped for free.

      Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not LED Grow Lights Depot.


      If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.15% (credit card / ViaBill), 2.6% (PayPal), 6% (Sezzle) order cancellation fee once the order has been processed (before it has been shipped). We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, the cancellation request may not reach the warehouse in time. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. All EZTrim orders are final and non-refundable or returnable.


      We offer return shipping in the USA if you are not 100% satisfied for any reason. Many brands have a 90-day return policy. See our full Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 5-25% restocking fee (brand dependent) may apply for returns within the dates of the return policy. Reach out to us for exact return instructions and restocking fees for the item(s) that you purchased.

      If you have any questions or would like to check the availability of an item, you may email us here or call us at (888) 611-9305. Thank you for shopping with us.

      Shop All LED Grow Lights

      Happy grows!

      Erik H.


      Why shop at LED Grow Lights Depot? This is why....

      1) Thousands of Successfully Shipped Orders and Thrilled Customers

      We have been in business since 2014 and are a highly-trusted online retailer offering honest grow advice and top-of-the-line LED grow lights and other grow/harvest/extraction equipment. We have thousands of 5-STAR PRODUCT REVIEWS from satisfied customers.


      2) Small, Family-Run, Veteran-Owned Business

      Founder/Owner Erik H. overseas that every customer is 100% satisfied with their purchase. If something is wrong, we will make it right, guaranteed! Call, email, or message us anytime and we will get back to you in about 1 business day or less (typically with-in minutes or hours during normal business hours). We have your back!


      3) Free Discreet Shipping in the USA 

      We offer FREE shipping in the lower 48 states via FedEx, UPS, USPS, or other popular couriers. We can ship most other products to Hawaii and Alaska for free too.


      4) Reliable International Shipping Available

      Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout. 

      Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery. 


      5) No Sales Tax in Some States

      Forget shopping locally or on other popular retail websites that charge tax. You can save a lot of money when buying though us since we do not charge tax in some states.


      6) 100% Low Price Guarantee

      We strive to ensure that we offer the absolute best prices online. Rest assured that you are receiving the best online price when you shop with us.

      If you find a better price online before or after you order from us (for up to one month), we will match or beat the competitor's price.

      Although rare, we may refuse to offer a price match in which we incur a loss.


      7) Easy Interest-Free Financing

      Finance your purchase in minutes! See our available financing options below:

      Buy what you want today and pay for it over four installments, interest-freeLook for the Sezzle button at checkout. Get approved up to $2,500. LEARN MORE.

      No Payments + No Interest if paid in full in 6 months on purchases of $99 or more. Get approved in seconds! Select PayPal at checkout and pay with PayPal credit or APPLY HERE


      8) Route Package Protection

      Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer. LEARN MORE.


      9) We are Authorized Dealers offering a Manufacturer's Warranty

      You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.


      10) Safe, Secure, Discrete Transactions

      We accept major credit cards, PayPal, Google Pay, Apple Pay, Sezzle, debit transactions, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.


      11) Hassle-Free Returns

      And just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason. See our FULL RETURN POLICY for full details.

      Customer Reviews

      Based on 14 reviews
      Hlg 350 r

      Bought 2 of the first version loved them then bought 2 more they were the second version and they were so damn good I still can't believe they ( 2 of them)absolutely kill a 5x5 at half power. No CO2 of course if I used that could probably turn them up. I love them and I have used a lot of different lights.

      Mr R.

      Excellent service from LED-GLD & exceptional quality from HLG. Always recommended and preferred!

      makar s.

      Horticulture Lighting Group HLG 350R Full-Spectrum LED

      Janice L.
      Almost to much light!

      Now I know this light is for a 4x4 however I put it in a 2 x 6 and it's extremely energy efficient. I get great light and I don't have to turn it up. Just cause it's dimmed down doesn't mean the spectrum changes!
      As soon as I move I will be buying at least 1 more of the 350 rspecs

      Christopher K.
      Incredible lights

      Fantastic performance! Lights are unparalleled for the cost. Have dozens of these running living soil beds. Highly recommend!