This LED bulb replaces T-8 fluorescent 18 inch products and provides easy change over with 2 wire connection including quick wiring ends that make conversion simple and easy. Bipolar wiring provides no-mistake hookup but must be wired directly to power source circumventing the ballast. Featuring built in surge protection and a 5500 Kelvin or Cool/Daylight white color scheme, this bulb provides a 800 lumen output. 2 pack