23 Watt Dimmable LED Bulb - 4 Foot T8 Lamp - 2,875 Lumens - Replacement or Upgrade for Fluorescent(-120V-4500K-Frosted) 23 watt t Series dimmable LED bulb Requires no ballast for operation These multi-voltage LED fluorescent bulbs run directly off any Voltage ranging from 90 to 132 volts Ideal for upgrading existing fluorescent Fixtures Lumen output is 125 lumens per watt for a total of 2,875 lumens per bulb