LED T5 High Output 4ft grow light - Direct Replacement Lamp - Transcend Lighting This LED works with any fluorescent T5 fixture. Plug-&-Play 45% less heat. 45% less energy. Same amount of light. High output. Thousands used by commercial growers around the country. Made in America with Free Shipping and 50,000 hour lifespan. Ideal photosynthetic growth spectrum for seed-to-harvest