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Furnace filters
shablue55
Jan 31, 2010, 11:54 AM
Just recently heard of Garrison furnace filters. Do they compare to 3M filters? I see that the only MERV rating is 8. Has anybody used them?
hvac1000
Jan 31, 2010, 03:57 PM
It they restrict the air flow too much they will damage your equipment or cause major problems.