This Keystone KT-LED15T8-48GC-840-D T8 Linear Direct Drive LED Lamp offers you a crisp 4000K CCT while outputting 1850 lumens. Rated 80+ on the CRI (Color Range Index). This product also features a sleek finish, with an input voltage measuring in at 120-277V while using only 15 watts of power! certified while being usable up to and over 50000 hours!