The 4ft. LED tube glass of 20W available in 5000K color temperature and having a CRI of >80 can deliver lumens up to 2800. It is an excellent substitute for T8, T10 & T12 fluorescent tubes. This 20W can safely and easily replace a fluorescent tube of 70W and bring an energy-savings of 50W. Thus, a lower utility bill for you every month. This 20W will work with a ballast, hence the LED tube can simply be inserted after taking out the existing fluorescent tube. These 20W LED tubes are housed in rugged die-cast aluminum for efficient heat dissipation. For the standard ceiling height, these LED Tubes having a beam angle of 120-degree emit enough bright light, have a long lifespan, and have a shatterproof coating, unlike the fluorescent tubes that were of inferior light quality, typically low lifespan, and usually with no shatterproof. One of the best things about LED tubes from LEDMyPlace is they are ETL & DLC listed, these listings make you eligible for a handsome rebate along with 5 years of warranty.