Description HLG300 ?indoor horticulture LED Lamp is designed to power a 3’x3′ space . Each lamp uses 2 of our custom designed High efficiency white light Quantum Boards. With a total of 576 Top Bin Samsung LM5301 LED’s. Clear Anodized Aluminum TOP FEATURES High efficiency white light Quantum Boards White Light Full Spectrum for better results Reliable passive cooled design Better canopy light penetration with diffused light Ideal for veg and bloom Dimmable Power Supply included Comes with 120V plug 3 Year Warranty SPECIFICATIONS Power 120-275 Watts Voltage Range 90-277 VAC LED 576 pcs Samsung LM301B ?Flowering Footprint 2.5’x2.5′ or 3’x3′ Veg Footprint 4’X4′ System Efficiency 164 Lm/W System PPF Efficacy 2.4 ?mol/joule Total output 660 PPF Dimensions 18″ x 20″ x 3″ Recommended Mounting Height 15-24 inches