Linear LED Light Bulb, Bulb Housing Glass, Bulb Shape T8, Color Rendering Index 80, Color Temperature 3500K, Lumens 2,160 lm, Nominal Length 4 ft, Watts 18 W, Color Selectable No, Light Technology LED, Bulb UL Type Type B, Voltage 120 to 277 V, Standards CSA, cULus, DLC, FCC, RoHS, Series ECO LED, Overall Length 4 ft, Bulb Finish Frosted, Bulb Manufacturers Warranty Length 5 yr, Bulb Minimum Starting Temperature -20 Degrees C, Dimming Type No Dimming, Dimming Method No Dimming