Horticulture Lighting Group 260 Watt XL Quantum Board LED Kit V2 Rspec


2 High Efficiency QB-288 V2 Rspec Quantum Boards

NEW - QB-288 V2 Rspec Quantum Boards Now Shipping!

Equivalent to a 500 Watt HPS, two of these will replace a single ended 1000 Watt HID grow light. Three of these kits equal a double ended 1000 Watt HID! 

The HLG 260 Watt XL kit V2 Rspec Quantum Board with 544 Highest Bin Samsung LM301B LED's and 32 Osram deep red diodes is the most efficient grow light kit on the market. The new Rspec spectrum will enhance flowering while still being a great all-around light from seed to harvest. Enjoy lower energy cost, less heat and more output, a 4% efficiency gain over the previous model!

 - "All the parts needed to build your own high performance LED grow light is included in the kit."

General Spectrum Info:

Rspec - Enhanced Flowering and General Use.

4000k - Vegetative Phase or as a Primary Veggie Light.

Custom configurations are available upon request, just contact us with your configuration.


  • Driver Adjustable from 135-285 Watts
  • Veg Footprint: 4’ x 4’
  • Recommended Flower Footprint: 2’ x 4’
  • 2 Kits Equal the Output of a Single Ended 1000 Watt HID!
  • 3 Kits Equal the Output of a Double Ended 1000 Watt HID!
  • Dimensions: 35" x 8" x 3"
  • 1 Year Warranty


  • 2 QB-288 V2 Rspec with LM301B Highest Bin Diodes and Osram Deep Red Diodes. 4000K LM301B Highest Bin Diodes
  • 1 Slate 2 Double Predrilled 600mm (~24") Heatsink
  • Mean Well HLG-240H LED Driver. Boards Should be Wired in Series with the Driver for Maximum Output
  • 8FT Nema 5-15P 16/3 SJTW NA Power Cord or Equivalent for Standard 120VAC
  • 1 AC Cable Joiner - IP68 (Water Proof) for Power Cord to Driver Connection
  • 2' Solid Core Wire
  • 5 WAGO Connectors for AC and DC Wiring
  • "No Tilt" Hanger Clips


  • QB 288 V2 Rspec- Lamp Efficacy: 2.6 µmol/J
  • QB-288 V2 - Lamp Efficacy: 2.47 µmol/J
  • QB-304 - Lamp Efficacy with S6 Flux Bin: 2.33 µmol/J


No Thermal Interface Material is required between the LED board and the heat sink.

Remove the black plug on top of the driver and use a small Philips head screwdriver to adjust the power.

LED Driver color wires


Molex Lite Trap

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