Goodlite - G-10723 F17T8/765/ECO Straight 17 Watt 24" Inch T8 Fluorescent Tube Light Bulb Daylight 6500k (30 Pack) G13 Medium Bi-Pin, 24" long, Good Efficiency 75% less energy than incandescent, CRI 77 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 F17T8/765/ECO - F17T8/SP65/ECO - F17T8/TL765/ALTO - FO17/765/ECO