About This 【WARM TIPS】- Please pay attention to the title information in our link before placing an order to select the lights that suits you. We have four types of tubes: Type A+B, Type B, single-ended & double-ended power supply, and only support double-ended power supply. Their installation methods are different. Improper operation may damage your lights and fixtures. If you have any questions, please contact us directly through Amazon. 【6 COLORS IN 1】- JESLED 4 ft led light bulbs offers you the option of choosing your color temperature directly on the fixture. With the flick of a switch, you can choose between 3000K/3500K/4000K/5000K/6000K/6500K to find the perfect colour temperature for any room and any job with just keep our t8 4ft tube light bulbs on hand. This product is Non-dimmable. 【PLUG & PLAY OR BALLAST BYPASS】- JESLED T8 4Foot Type A+B LED light bulbs can be installed with a ballast( Plug & Play) or without a ballast (BALLAST BYPASS), making LED conversion fast, simple and secure. 【BRIGHT, ENERGY SAVING】- JESLED shatterproof 4ft T8 LED tube lights have an outstanding life rating of 50,000+ hours,low power consumption, greatly save your replacement cost.These 4ft bulb fixture provides 3200 lumens by 24W(equivalent to 70W fluorescent bulbs) and adopt high-quality LED chips, instant on, no delay, no flicker, no noise, no mercury. 【QUALITY ASSURANCE】 -JESLED provide 3 years unlimited customer service! If you are not satisfied with our products, please contact us for an easy and quick solution. Overview Brand : JESLED Light Type : LED Special Feature : Frosted Wattage : 24 watts Bulb Shape Size : T8