A21 Amber Quad-Loop Filament Incandescent Bulb
Early lightbulb developers often used multiple filaments to create a brighter light. Our reproduction of one of the most popular carbon-filament styles – patented by Thomas Edison – uses a tungsten filament and possesses the glass-tip construction typical of early manufacturing. To showcase its shape and ambient glow, position the bulb behind a clear shade or within an exposed socket.
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- 2⅝" diam., 5"L