K&N Home Furnace Air filter Adapter
My K&N air filter was a hair too small. Made this adapter to make it bigger and eliminate the noise when it moves.
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updated January 12, 2025
Description
PDFMy K&N air filter was a hair too small. Made this adapter to make it bigger and eliminate the noise when it moves as it is sucked up when the furnace starts and when it falls down when the furnace stops.
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The author marked this model as their own original creation.
