02-14-2008, 06:30 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,546
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if you have access to a press brake you can make your own filter carrier frame. just bend a U shaped frame and install it in your plenum. you can cut a hole in the blower section for make up air and mount the filter carrier outside of the furnace. most cases the filter media will be too large for the plenum (hot or cold) so you'll need to install it at an angle.
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