Air shield furnace filters. Are they any good?
I have a 2000 Cfm furnace so I need a low restriction filter. Air shield's filters are cheap and they claim to have more pleats per foot and low air resistance. Have any of you guys tried air shield's filters? You can find them here http://www.homefilters.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=HF&Category_Code=1inch-filters.