LEDwholesalers 2501W+B Blue/White 225 LED 13.8 Watt Square Grow Light Panel 110 Volt Thickness: Low profile 1.25-Inch Power cord length: 48 inches Power: 13.8 Watts Dimensions: 12 x 12 inches (30.5cm) square Recommended coverage: One panel per 2 square feet for full illumination.