Hyperikon T8 LED Light Tube, 4 FT, Dual-End Powered, Works with and without ballast, 15W (36W Equivalent), 5000K (Crystal White Glow), Clear Cover, DLC & UL SAVE 59% INSTANTLY - Save 59% on your electricity bill! Replace 36W fluorescent tubes with 15W LED. 45,000 HOUR LIFETIME - With an astonishing life rating of 45,000 hours, or 21 years with 6 hrs/day of use, replacing your tubes is now a thing of the past. TURNS ON INSTANTLY - Our 15W LED Light Tube is engineered to light instantly when the switch is flipped. No more waiting for old fluorescent tubes to warm up or turn all the way on! SUPER BRIGHT - Bring your application the best lighting available with an incredible minimum of 158lm/watt. Illuminate the darker corners of your space! HASSLE-FREE WARRANTY - Hyperikons five-year unlimited warranty means weve got you covered! Contact us for an easy and fast replacement.