HLG 650R Commercial Indoor Horticulture LED grow light is designed to replace a double-ended 1000 watt HID lamp. 650 R uses 4 of our custom designed full spectrum high efficiency white light quantum boards with Samsung LM301H and Deep Red LED 660nm . This unit is dimmable, with wattage output from 60 to 610 watts. DOWNLOAD SPEC SHEET DOWNLOAD HLG 650R MANUAL View Report for Output & Efficiency Watts to BTU Calculator, Cooling Requirement Calculator Top Features 2.81 PPF/W High Efficiency at 630 watts 1770 PPF High Output to replace even 1000W DE Quantum Board® QB 648 made by Samsung Full Spectrum White and 660nm Red Reliable passive-cooled design Better canopy light penetration with diffused light 60 to 630 Watts Dimmable design Auto sensing Inventronics power supply works on both 120VAC and 240VAC and 277VAC 3 Year Warranty PPFD Chart at 24 inches and 30 inches Expect higher intensity and more even coverage in a grow tent, reflective area or a cross over with multiple lamps. Specifications Power 60-630 Watts Voltage Range 100-277 VAC 50-60Hz LED Samsung LM301H & Deep Red Flowering Footprint 5' x 5' at 30" Veg Footprint 7' x 7' at 48” System PPF Efficacy 2.81 μmol/joule Total output 1770 PPF Dimensions 26" x 21.25" x 4" Recommended Mounting Height 30-36 inches above canopy