The Horticulture Lighting Group 135W QB® V2 RSPEC is a high-efficiency, full-spectrum LED grow light kit designed for small to medium grow spaces. It combines cutting-edge horticultural technology and DIY flexibility, making it a favorite among indoor growers. At the heart of the kit is the QB288 V2 RSPEC board, featuring 272 top-bin Samsung LM301H LEDs plus 16 Osram deep-red 660 nm diodes. This combination delivers a powerful, broad-spectrum light ideal for all plant life stages. With a dimming range from approximately 60 W to 160 W, it offers exceptional energy control, dramatically reducing electricity costs and heat compared to traditional HID lamps. The kit includes a high-quality Meanwell HLG‑120H‑54A driver (≈93.5% efficient), a sturdy 340 mm heatsink, NEMA power cord, DC wiring, and mounting clips. But if you’re thinking about another more powerful or a different lighting system, then check out the HLG 650R or even the 260W WB V2 RSPEC.