Out of the three main sizes in LED tube -- 2ft, 4ft, and 8ft, the 8ft can be considered the brightest LED tube because of its ability to deliver a higher lumen output to serve larger applications and a higher energy efficiency than what you get with the other sizes. While our 8ft LED tube is available in two main wattages -- 40W & 48W, the 48W can deliver a significant amount of lumens -- 5800 lumens. Having a beam angle of more than 120 degrees, the 8ft LED tube has a 3-4 times longer lifespan than the fluorescent tubes, considering the longest lifespan of any fluorescent tube as 15,000 hours. This 8ft LED tube works without a ballast, and hence, the ballast must be bypassed. With an excellent heat dissipation system, this 8ft LED tube is designed to work smoothly and for longer.