These are True Wattage boards perfect for a 2x4 4x4 Grow Tent. 250W TOP BIN Samsung lm301H + 660nm Deep Reds led Bar lights for flowering. High photon efficacy allows more light to reach plants for healthier growth. And enables indoor farms to save on energy costs. Samsung Electronics, a world leader in advanced digital component solutions, announced an industry-leading enhancement to its mid-power LED package the LM301H for horticulture applications, such as greenhouse and vertical farming.At 3.10 micromoles per joule (mol/J), the newly introduced LM301H now features the highest photon efficacy among todays mid-power white LED packages. Pre-wired Strip 4x L=22in x W=2.16in x 10mm, 4pcs. High efficiency white with red light Pcb Boards. White Light Full Spectrum for better results. Better canopy light penetration with diffused light. Perfect performance for veg and bloom. Please make payments within 3 days of winning auctions. Feedback is VERY important to us. The item "240 Watts Samsung Bar System Lm301H+660nm Full Spectrum LED Grow Light MeanWell" is in sale since Saturday, December 28, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics & Seed Starting\Grow Light Kits". The seller is "413-led-grow-lights" and is located in Southwick, Massachusetts. This item can be shipped worldwide.