LEDHOLYT T8 4ft 18W(40W equivalent) LED Light Tube, Single Ended Power, Easy Ballast Removal Installation, Clear Cover, UL-Listed 5000K (Crystal White Glow), 1 Pack LEDHolyt LED tube lights are UL-classified [E479761], FCC certifications, DLC Approved, High safety is no doubt assured. Super bright, 18w replace 36w fluorescent tubes, Save 50% on electricity bill of lighting comparing with the fluorescent light, long life span,5years' warranty. Single ended power, Input voltage is AC100-270V, Lumen is 2168LM,120 degree beam angleclear light cover. Easy Installation. International standard shape for T8 tube light-4ft, Easily fitted instead of traditional fluorescent tube lamps, bypass the starter and ballast before installtion No mercury, no ultraviolet rays radiation, no strobe,protect your eyes. Material: Top quality Aluminum & superior PC.