Description

Rough service light bulbs like this one have multiple support filaments to prevent premature burnout from the constant movement and vibration encountered in commercial and industrial applications. The American Light Bulb 660 bulb is equipped with a heavy-duty 130 volt filament, allowing it to last longer when operated at 120 volts. With an amazing 10,000 hour life, this bulb will outlast almost all bulbs of its kind.