(CASE of 12) Westinghouse 37297 40w U-shaped Fluorescent U-Bend Bulb, Cool White, FB40 T12 841 6 Ecomax, [FB40T12/841/6/ECOMAX] Pack of 12 40-Watt U-Shaped (U-Bend) Fluorescent Bulbs Cool White Color, (4100K) - Compare with FB34 Medium BiPin Base (Two pins on each end). Ideal for bright lighting applications, like office space, kitchens, etc. Gets you more light than FB34 - This FB40 Bulb is the same as the FB34, but with a little more zest.