Willamette 8-foot Retrofit TLED tube lights are perfect for T8, T10, and T12 retrofit applications. These UL listed, highly efficient LED lamps are arguably the best value in the marketplace today. With Willamette 8-foot LED tube lights, the switch from fluorescent lamps to LED is easy, quick, and cost effective. Note: Requires removal of existing ballast and rewiring of the socket in existing 8-foot fluorescent fixtures.