Topstar bypass LED T8 lamps have been designed and engineered for demanding commercial applications. The lamp's coated glass diffusing tube and compact light engine produce 325° of evenly diffused light. The micro-designed driver allows for a smaller end cap and end-to-end lighting with no dark spots. This UL listed tube requires bypassing the ballast during installation and runs directly off line voltage to eliminate compatibility problems, incidental power loss, lifetime issues, and maintenance costs associated with ballasts.