The T8R Series LED retrofit T8 lamp is the ideal replacement for existing 4 foot fluorescent T8 tubes. The frosted glass housing is shatter-proof and emits a 230° beam angle. This LED tube is rated with a lifetime of 50,000 hours. Ballast bypass or dual mode (direct replacement and ballast bypass) installation. This LED lamp is instant-on with no delay and is designed for maintenance-free operation.