We recently contributed to an article in Holmes Magazine entitled “Find The Right Furnace Filter”.
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Bryan asked: Hi. This website is great; there is really good information. My question is regarding large filters. My furnace requires a 5-inch pleated filter, but because these are hard to find I have placed 5 1-inch pleated filters from 3M. Is this going to restrict too much airflow? Should I buy a 5-inch or [...]
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