LUMINOSUM T8 T10 T12 LED Tube Lights 4ft 48&rsquo;&rsquo; 20W (40W Equivalent) 5000K, G13 Dual-Ended Powered Clear Cover, ETL Listed Fluorescent Light Replacement, 4-Pack ENERGY SAVING - Save up to 50% on your electricity bill when replacing fluorescent tubes by LUMINOSUM 8ft LED tube lights. BRIGHT, HIGH ILLUMINATION - Illuminate your space with 2000+ lumens! No annoying flicker and distracting buzz. Energy efficient and environmental friendly. SAFE and LONG LASING - With ETL certified, LUMINOSUM LED tubes are safe to use and have a long lifetime of 50,000+ hours. EASY BALLAST BYPASS INSTALLATION - LUMINOSUM 8ft LED tubes are compatible with T8, T10, T12 fluorescent fixtures, just requiring a simple ballast bypass (direct wire) installation. BUY IN BULK, GET MORE DISCOUNT - LUMINOSUM has stable supply for LED tube lights. Its ideal supplier for business customers.