Goodlite  F17T8/741 17 watt 24" Straight F17 T8 Medium Bi-Pin (G13) Base, 4100k Cool White  Fluorescent Tube Light Bulb G13 Medium Bi-Pin, 24" long, Good Efficiency 75% less energy than incandescent, CRI 76 1350 Lumens More than 80++ lumens/watt efficacy Bulb. Meets Federal Minimum efficiency Standards Works with INSTANT / RAPID Start Fixtures, Long Life: &gt;20,000 hour ,Bulbs sleeved safe wile shipping Energy efficient, high energy savings in an environmentally responsible lamp Environmental responsibility and low mercury meets TCLP, Brand Cross Reference F17T8/741/ECO, F17T8/SP41/ECO, F17T8/TL741/ALTO, FO17/741/ECO