This Keystone KT-LED18T8-48P-835-D T8 Linear LED Lamp offers you a crisp 3500K CCT while outputting 1800 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 18 watts of power! certified while being usable up to and over 50000 hours!