Thread: Furnace Filters
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Join Date: Nov 2007
Location: Oklahoma
Posts: 86,179
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Furnace Filters

OK I need some help from the brain trust. My furnace filter is one of the washable - reusable types that was in the furnace when we moved in 12 years ago. I wash it out regularly and it catches a lot of crud but I want something better. I know how to use a tape measure. That filter is 20.5 x 30 inches plus or minus a 32nd of an inch. There are lots 20 x 30 filters on the market. I can't find anything that is 20.5 x 30.

What am I missing? Will a 20 x 30 filter work with a 1/4 inch gap on each side?
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
Old 11-18-2009, 03:30 PM
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