HLG BLACKBIRD is designed for home grows and is perfect for 4x4 grow tents. HLG’s newest Scorpion Series edition, the BLACKBIRD, uses 6 Full Spectrum QB® 200 Quantum Boards® for an even light spread at just 20” from the canopy. So suitable for grow tents for full and flower cycles. Highest efficiency full spectrum grow lamp. Full Spectrum White and Deep Red. Reliable passive-cooled design. Better canopy light penetration with diffused light. Dimming power supply included. Auto sensing power supply which works on 120VAC, 240VAC, and 277VAC and it has a 3 Year Warranty.