Philips 37893-5 FB32T8/TL735/6/ALTO U-Bend Fluorescent Tube, 6-Inch Spacing 2650 Lumens 20000 Lamp Life Hours 78 Color Accuracy (CRI) 3500K Color Temperature Warm White MOL (in) 22.5" , 6" Leg Spacing Medium Bi-Pin (G13) Base