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260 Watt DIY LED Grow Light Kit with Two High-Efficiency QB648 Quantum Boards

Top Features

  • Dimmable (driver) from 135-285 Watts
  • 500 watt HID replacement (use 2 kits to flower a 4' x 4' space)
  • Veg Footprint 4' x 4' (16 sq ft)
  • Recommended Flower Footprint 3' x 3' (9 sq ft) or 2' x 4' (8 sq ft)
  • LM301H 4000K + LM351H 660nm Deep Red; full spectrum for better results
  • Reliable passively-cooled design
  • Better canopy light penetration with diffused light
  • Ideal for full-cycle grows or flowering
  • 1-year manufacturer's warranty

    Kit Includes

    • 2 x QB648 USA-made Quantum Boards with Samsung LM301H White + LM351H 660nm Top-Bin Diodes
    • 1 x Slate 2 Double Predrilled 600mm Heatsink
    • Meanwell XLG-240 LED Driver. Boards should be wired in series with the driver for maximum output.
    • Full-range potentiometer
    • 6ft Nema 5-15P 16/3 SJTW NA Power Cord or equivalent for standard 120VAC with cable connector
    • 2ft solid core Wire, 2x Wago Connectors for DC wiring
    • Hanger Clips


    • Dimensions: 60cm x 20.50cm
    • Lamp Efficacy of QB648: 2.8+ µmol/J
    • Board Level Efficacy with QB288 V2 Rspec 2.73 µmol/J
    • No Thermal Interface Material is required between the LED board and the heatsink
    • Remove black plug on driver and use Philips head screwdriver for dimming
    • Kit is shipped disassembled and requires assemly before use
    • Tools required: screwdriver and wire strippers (or scissors). No soldering required.