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.

4 ft. T8/T12 tube LED light bulb with G13 base

Bulb tube type: type B ballast bypass

Brightness: 1，800 Lumens

Estimated yearly energy cost: $2.17 (based on 3 hours/day， 11/kwh. costs depend on rates and use)

Average life: Up to 45.7 years (based on 3 hours/day)

Light appearance: 3000K (bright white)， 4000K (cool white)， 5000K (daylight) or 6500K (daylight deluxe)

Energy used: 18-Watt

Input line voltage: 120-Volt to 277-Volt

Lumens per watt: 100

Uses up to 43% less energy compared to a standard fluorescent lamp

Safety list: UL Listed

Ballast bypass installation requires direct wiring for longer installation time， but more efficient operation and less maintenance over time

Shatter-resistant and mercury-free， no special disposal is required

Flicker-free， instant on illumination at full brightness

Ideal for various applications including office， garage， warehouse and basement

Usage: troffer， commercial and residential indoor use

Non-dimmable

Included 10-bulbs