Wattage: 13W, Type: LED T8 U-Bend Tube, Color Temp (Kelvin): 4000K, Lumens: 1900, Replaces: 32W T8 Fluorescent Tube, Certifications: UL, ETL, DLC Listed, Leg Spacing: 6.00 in., Tube Diameter: 1.00 in., Base Type: G-13 (Bi-Pin), Average Life Hours: 50,000, Case Quantity: Order 20 for a full case, Color Emitted: Cool White, Viewing Angle: 240 Degree. Ballast compatible, for use with electronic ballasts.