Feit Electric’s 18-watt Ballast Bypass (Type B) Non-dimmable Linear LED Tubes replace T8 and T12 fluorescent and LED tubes. They require direct wiring by bypassing the existing ballast. This added installation step enables efficient operation and less maintenance over time. They emit 1800 lumens of bright LED light. Choose from four white light options (Bright white 3000K, Cool White 4000K, Daylight 5000K, or Daylight Deluxe 6500K) before installing so you always have the right light for any job. They are a bright, reliable choice for many residential or commercial lighting including living rooms, garages, warehouses, offices, workshops, basements, convenience stores, retailers, classrooms, and more. T4815/4CCT/B/LED/10 LED linear tubes offer flicker-free, instant-on illumination with no warmup time needed to enjoy superior light quality. They are mercury-free, with a shatter-resistant coating for safe and easy disposal. Each high-quality bulb offers accurate color-rendering, for more vibrant, true-to-life colors. Lower heat emission extends the life of the tube and ends do not turn black or burn with age. The estimated energy cost is only $2.17 per year, saving energy over equivalent fluorescent tubes. Use Type B LED linear light bulbs in commercial and residential applications and get up to 50,000 hours. That’s 45.7 years of superior light with 3 hours of daily use.