Our HLG550 V2 ECO indoor Horticulture LED grow light is designed to replace a single-ended 1000watt HID. ECO Model of HLG 550 offers highest output and efficiency for your money. This unit is dimmable, with wattage output from 200 to 480 watts. 3000K Spectrum recommended for flowering and 4000K recommended for Veg. TOP FEATURES High efficiency white light Quantum Boards® Full-spectrum for better results Reliable passive-cooled design Better canopy light penetration with diffused light Dimmable power supply included Auto sensing power supply works on both 120VAC and 240VAC 3-year warranty Higher intensity and more even coverage in a grow tent, reflective area, or by crossing over using multiple HLG-550 V2 lamps. SPECIFICATIONS Power 240-480 Watts Voltage Range 90-277 VAC LED 1296 pcs Samsung 301H Flowering Footprint 4' x 5' at 30" Veg Footprint 6' x 6' at 36” System Efficiency 171 Lm/W System PPF Efficacy 2.5 μmol/joule Total output 1200+ PPF Dimensions 26"X20"x3" Recommended Mounting Height 22-32 inches above canopy ECO Model of 550 does not have ETL listing.