This Feit Electric 40 watt Incandescent clear A15 specialty light bulb can be used for ceiling fans and other specialty applications. It has a E17 intermediate base, an average rated life of 2,500 hours and operates at 120 volts. A heavy-duty filament resists vibration, giving the bulb a longer life than standard ceiling fan light bulbs. Choose a dependable Feit Electric specialty use light for your home or business.