The 4ft. LED tube glass of 18W and color temperature 5000K is available as a clear tube and with a hybrid ballast option. With a CRI of >80, this LED tube can deliver lumens up to 2400. It is an excellent substitute for T8, T10 & T12 fluorescent tubes. This 18W can safely and easily replace the fluorescent tube of 65W and bring an energy savings of 47W. Thus, a lower utility bill for you every month. These 18W 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 >220 degrees 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. This tube provides you an option of both ballast compatibility and plug-n-play when the tube is found incompatible with the existing fluorescent tube ballast, you can directly wire it to the line source and if compatible, just remove the existing fluorescent tube and insert the LED Tubes.