Goodlite G-FB32T8/841 10 T8 U- Bend 32-watt 6-Inch Wide  Fluorescent Tube Light Bulb, Cool White, 10-Pack G13 Medium Bipin, 6'' Leg Spacing 22.5'' ,800 series high quality triphosphor coding Energy efficient, low mercury meets TCLP, CRI 85 3200 Lumens More than 80++ lumens/watt (efficacy) Bulb Meets Federal Minimum efficiency Standards Works with INSTANT/RAPID Strat Fixtures, Long Life: &gt;25,000 hour ,Bulbs sleeved safe wile shipping Energy efficient, high energy savings in an environmentally responsible lamp Cross ReferenceF32T8/SP41/U/6/ECO - FBO32/741/6/ECO - FB32T8/TL741/U/6/ALTO - FB32/SP841/6 -F32T8/SPX41/U/6/ECO - FBO32/841/6/ECO - FB32T8/TL841/U/6/