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HLG 300L Rspec®

HLG 300L Rspec®

Regular price $380.00 USD
Regular price Sale price $380.00 USD
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Our HLG 300L Rspec® indoor horticulture LED grow light is designed to replace a single-ended 600 watt HID. The HLG 300L Rspec uses 2 of our custom designed full-spectrum high efficiency white light Quantum Boards® with Samsung LM301H and Deep Red LED 660nm. Learn more about the individual QB-288 Quantum Boards® 

Top Features

  • New improved longer design for more even light coverage
  • High efficiency white light Quantum Boards®
  • Full-spectrum White and 660nm Red
  • Reliable passive-cooled design
  • Better canopy light penetration with diffused light
  • Inventronics EUM-240 Dimmable LED power supply included
  • Auto sensing power supply works on both 120VAC and 240VAC
  • 3 Year Warranty



Power 30-250 Watts
Voltage Range 90-277 VAC
Flowering Footprint 2.5' x 2.5' or 3' x 3'
Veg Footprint 4' x 4'
System PPF Efficacy 2.7 μmol/joule
Total output 679 PPF
Dimensions 26" x 10" x 2.75"
Recommended Mounting Height 18-24 inches
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Customer Reviews

Based on 1 review
Steadfast Grower
Dynamite Light + Dynamite Service

I typically order through HLG direct, but this was my first time purchasing through HighPar and I was more than satisfied with their outstanding service from the start of our relationship. They eased any concerns I had and more than delivered every step of the process. I will surely be ordering through HighPar from here on out.

In regards to the hardware, I have ran multiple units of the 300L over the years and have been more than satisfied with the build quality and end results. I use them in place of the 550 Rspec, so I can optimize the light spread with more modularity because I'm always changing grow setups. The HLG build quality is stellar and includes UL certification by US/Canada standards. If you build your own lights or buy cheaper lights, be aware your insurance may not pay your claim if you were to have a house fire for any reason.

On another note, the HLG warranty is top-notch. I recently had a light that needed replacement and HLG had a new light to me in Canada within 48 hours at no cost. What else could you ask for?