This TCP dimmable energy efficient two piece replacement lamp tube allows you to minimize the cost of lamp replacement by separating the ballast from the lamp tube. This lamp tube is rated for 10,000 hours, which is approximately the lifetime of 13 regular incandescent bulbs. When paired with the proper replacement ballast, this lamp tube draws 9 watts of electricity to produce the same amount of light as a 35 watt incandescent. TCP's unique lead-free glass and a specialized phosphor mix keep light output high over the lifetime of the tube. This tube is suitable for use with dimming ballasts. Ideal for use in Bare Bulb Fixtures, Ceiling Fixtures, Wall Sconces, Floor Lamps, Table Lamps, and Outdoor Fixtures.