TCP DirecT8 LED TYPE A compatible replacement T8 tubes for linear fixtures feature multiple ballast compatibility for Instant Start ballasts. 50% energy savings (based on T8 NBF energy use). Long 50,000 hour rated life—minimizes replacements and labor costs. Compatible with Instant Start ballasts. Dimmable (0-10v dimming ballasts recommended). No rewiring of xture—simply replace fluorescent lamp with LED lamp. Instant on/off.