Introducing FlexFit (Hybrid UL Type A + B) T8 LED Lamps by Philips. It works as either a plug-and-play (UL Type-A) or ballast bypass (UL Type-B) lamp. FlexFit is one lamp for two applications and works as either a UL Type A or UL Type B lamp;Simple Installation with plug and-play or double-ended options for the simplest and quickest installation in either configuration;Light quality and performance predictability with consistent light output and no visible flicker to satisfy every customer Philips FlexFit (Hybrid UL Type A + B) lamps are designed with the customer in mind for installation flexibility. The FlexFit lamp can operate as both a plug and play (UL Type-A) and double-ended direct wire (UL Type-B). As with all Philips products, the FlexFit family of lamps are compatible with more ballasts than any manufacturer giving the customer peace of mind during installation. Additionally, the long life (50K hours) delivers reduced maintenance and replacement costs. If the ballast should fail, simply cut the ballast from the system and wire the tube directly to line voltage (120-277V)! Over 40% energy savings compared to traditional fluorescent lamps;Lifetime delivered: Average life rating of 50,000 hours;5-year limited warranty (For more information on Philips limited warranty please visit philips.com/warranties);Compatible with a variety of ballasts;The lamp can quickly be installed as a double-ended ballast bypass lamp Warehouses;Offices;Schools