Feit Electric's 15-watt (32-watt equivalent) Selectable White Direct Replacement or Ballast Bypass (Type AB) Non-Dimmable LED Lamp replaces either T8 (Type A) or T8 and T12 (Type B) fluorescent and LED tubes. Install these versatile lights in two ways: plug and play direct replacement using the existing electronic ballast with no rewiring necessary， or direct wire installation bypassing the ballast. Bypass the ballast for efficient operation and less maintenance over time. These 1850-lumen LED lights emit the same light output level as traditional bulbs， using up to 53.1% less energy. Versatile 4000K Cool White lights provide clean， neutral white light for both living and workspaces. Use them for multi-purpose lighting or task lighting wherever it is important to feel refreshed and ready to get things done.An ideal choice for most general lighting， use them in offices， garages， workspaces， warehouses， and more. Experience high color-rendering， for more vibrant， true-to-life colors. T4815/840/AB/LED10RP lights offer flicker-free instant-on illumination with no warm-up time. They are mercury-free and shatter-resistant， for safe and easy disposal. Lower heat emission extends the life of the tube and prevents lamp ends from blackening. The estimated energy cost is only $1.81 per year. Switch to Type AB LED linear lights for your space and get up to 50，000 hours of superior light. That's 45.7 years with 3 hours of daily use.

4 ft. T8 tube LED light bulb with G13 base

Bulb Tube Type: T8 type A plug-and-play or T8 and T12 type B ballast bypass fluorescent replacement

Brightness: 1，850 lumens

Estimated yearly energy cost: $1.81 (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: 4000K (cool white)

Energy used: 15-Watt

Input line voltage: 120-277 Volt

Lumens per watt: 123

Uses up to 53% less energy compared to a standard fluorescent lamp

Safety list: UL Listed

Flexible installation options， either direct plug-and-play using the existing electronic ballasts or with simple rewiring of the fixture to bypass the ballast

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