(4 Pack) F40WW/SS/ECO - 34 Watt - WW - T12 - Warm White - Replaces 40-Watt Linear Fluorescent Light Bulbs (Pack of 4) F40WW/SS/ECO Color/Finish: Warm White Average Lifetime: 20000 hours Medium Bi-Pin (G13) Base Extra Long Life, Rapid Start