SATCO NUVO's 18.5-watt T8 LED frosted tubular bulb offers natural light and a 180 degree beam spread. The bulb features a medium bi pin base, ballast bypass, and single or double ended wiring. This all glass tube is PET coated for shatterproof protection and delivers 50,000 hours of superior illumination.|SATCO NUVO's S11917 18.5-watt T8 LED frosted tubular bulb offers natural light and a 180 degree beam spread. The bulb features a medium bi pin base, ballast bypass, and single or double ended wiring. This all glass tube is PET coated for shatterproof protection and delivers 50,000 hours of superior illumination.