20 hours on / 4 hours off at 12 inches -18 inches above plants Product weight 2190g Packaging 1 cardboard box including: – 300W LED Grow Light x 1 unit – Power cord x 1 unit – Light hanger x 1 unit Carton size: 27x41x11 (cm) Shipping weight 2. 850 Kg The 300W led grow plant light is fill spectrum plant grow light and ROHS certificated. 300W led grow light, with current power cosumption of 130W, energy saving led panel grow light for micogreens, and other plants. The led grow light 300W is recommended for 1.5ft x15ft flowering or 2ft x2ft veg grow area. 850 Kg The 300W led grow plant light is fill spectrum plant grow light and ROHS certificated. 300W led grow light, with current power cosumption of 130W, energy saving led panel grow light for micogreens, and other plants. The led grow light 300W is recommended for 1.5ft x15ft flowering or 2ft x2ft veg grow area. 850 Kg The 300W led grow plant light is fill spectrum plant grow light and ROHS certificated. 300W led grow light, with current power cosumption of 130W, energy saving led panel grow light for micogreens, and other plants. The led grow light 300W is recommended for 1.5ft x15ft flowering or 2ft x2ft veg grow area.