High Efficient & Energy Saving: Equivalent to 40W fluorescent lamp by only using 18W, saving 50% on your electricity bill. Emits 2400 lumen of brightness per bulb, much brighter than the fluorescent tube. 6000K Daylight White Bulbs: Help reduce eye strain and increase visibility in office, classroom, hospital, warehouse, garage, hotel, shop and salon etc. Ballast Bypass: Must remove the ballast before installation, which eliminates future potential failure issues and ballast maintenance, saving time and money. Compatiable with T8/T12 bulbs with G13 base. Double End Powered: The lamp holders on one end of the tube must be connected to [neutral wire], while the other must be connected to [live wire].These bulbs are compatible with both shunted and non-shunted lamp holders. Excellent Performance: Instant on to full brightness, zero flicker, no buzzing sounds, no mercury, no shadows, our light tube has 50,000hrs lifespan, buy with confidence! Specification: LED Tube Type: Type B Input Voltage: AC 85-277V Rated Power: 18W (40W Equivalent) Color Temp: 6000K Daylight White Lumen(lm): 2400LM Beam Angle: 180° Base Type: G13 Bi-Pin Installation Way: Ballast Bypass Powered Way: Dual Ended Power Operated Temp: -20℃ to 50 ℃ Lens Type: Frosted Dimmable: No Waterproof: No Length: 4 Foot Package: 24 Pack Warranty: 5 years Caution: 1. Turn off the power supply before installation. 2. Ballast bypass and dual end installation. 3. Do not use this tube with dimmers. 4. Installing the wrong type of LED tube can result in premature failures and potentially dangerous short-circuits and fire hazards, pls check the specs clearly before purchasing and installation.