The Westgate Mfg T8-4FT-TYPB-17W-40K-F is a 17W 4-foot Type B LED T8 tube lamp with frosted glass for reduced glare in direct-wire fluorescent retrofit applications. It delivers 2,200 lumens at 4000K across a 180 beam angle and supports single- or double-ended wiring configurations. UL listed with a 50,000-hour rated life, CRI >80, and a 5-year warranty.