Goodlite G-20249 F32T8/741/ECO  Straight 32 Watt 48-Inch Inch T8 Fluorescent Tube Light Bulb Cool White 4100k G13 Medium Bipin, 48" long, Good Efficiency 75% less energy than incandescent, CRI 75 3250 Lumens More than 100++ lumens/watt (efficacy) Bulb Meets Federal Minimum efficiency Standards Environmental responsibility low mercury meets TCLP requirements, Brand Cross Reference F32T8/741/ECO -F32T8/SP41/ECO -F32T8/TL741/ALTO -FO32/741/ECO Works with INSTANT / RAPID Start Fixtures, Long Life: 20,000 hour ,Bulbs sleeved safe wile shipping Energy efficient, high energy savings in an environmentally responsible lamp