FeitElectric's 18-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 this versatile light 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. Choose from Bright White 3000K, Cool White 4000K, Daylight 5000K or Daylight Deluxe 6500K before installing to have the right light for any job. It is a bright, reliable choice for living rooms, garages, warehouses, offices, workshops, basements, convenience stores, retailers, classrooms and more. Experience high color-rendering, for more vibrant, true-to-life colors. They are mercury-free and shatter-resistant, for safe and easy disposal.