Convert your existing fluorescent fixture to LED technology with the Feit Electric T848/830/LEDG2/2 4 ft T8 LED plug and play lamps. These 3000K warm white, non-dimmable tubes produce a similar fluorescent lamp output (1800 Lumens), uses 18 W of electricity and up to 44% less energy than a standard fluorescent lamp. Get instant on to full brightness even in sub-zero temperatures with relatively cool running performance. Feit Electric shatterproof T8 lamps have an average life of 35,000 hr/32 years are RoHS compliant and are 100% mercury-free.