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This set of four 28mm SMF2 red festoon LED bulbs updates multiple interior or vanity lights with modern LED color and improved output. Each bulb uses two 5050 SMD LEDs and features an embedded load resistor and implanted diode for reliable operation, along with durable metal terminals to resist vibration. With roughly 24 lumens measured output per bulb, these plug-and-play replacements deliver a noticeable brightness increase over original incandescent festoon bulbs while simplifying installation.
Diode Dynamics 28mm SMF2 LED Bulb - Red Set of 4
