GE f40/cx41/u6/upc, 6", 40w, cool white light color, white bulb color, t12 shape, u-bend, fluorescent bulb, 6" leg spacing, dimmable, with dimming ballast, 2,450 lumens, 4,100 kelvin color temperature, cri = 82, 18,000 hours rated life, mol = 22.5", individually bar coded.