LED Bulb Type B T8, Bulb Base Type Medium Bi-Pin (G13), Bulb Housing Glass, Bulb Shape T8, Color Rendering Index 80, Color Temperature 3500K, Incandescent Wattage Equivalency 32 W, Lumens 1,900 lm, Nominal Length 4 ft, Shatter- Yes, Watts 13 W, Color Selectable No, Light Technology LED, Bulb UL Type Type B, Voltage 120 to 277 V AC, Standards cULus, NSF Rated, UL 1993 Environmental Rating Damp Location, Overall Length 48 in, Bulb Manufacturers Warranty Length 7 yr