MasterClass InstantFit LED T8 lamps have been proven to work with 216 different ballasts, delivering even light output, proven energy savings and long average lifetime. Proven over 40% energy savings compared to traditional fluorescent lighting;No visible flicker - All InstantFit lamps are below 1.0 (Refer to NEMA77, IEC 61547 & IEC 63158 standard for SVM (Stroboscopic Visibility Measure);A variety of drivers enable optimizing the light output and wattage consumption for each application The MasterClass InstantFit T8 lamps provide hassle-free installation with simple lamp-for-lamp replacements. They deliver what we promise, with at least 40% energy savings, flicker-free performance, and the life you would expect. Other lamps claim compatibility but only MasterClass InstantFit (UL Type A) has been proven to work with over 200 ballasts and drivers, delivering even light output, with proven energy savings and a long average lifetime. End users will be delighted being under these comfortable and high quality lamps with no visible flicker and optimized optics. Energy managers will enjoy these lamps too as they can count the savings delivered by our lamps. To enjoy more energy savings, the MasterClass InstantFit lamps can be paired with the Advance TLED drivers to create a Type C system. With available 70,000 hour life, 7-year limited warranty and a shatter-prevention polycarbonate lens, Philips MasterClass InstantFit TLED lamps deliver benefits for all. MasterClass InstantFit works with over 200 ballasts and drivers;Flexibility - Type A lamps can be used as type C lamps;Dimmability - Certain lamp driver combinations are dimmable;Lifetime delivered: Average life rating of 70,000 hours;Lamp sizes range from 2-foot to 8-foot and U-bend with a variety of lumen outputs. Warehouses;Schools;Offices