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*Genuine Lennox Furnace Filter;Your best prices for furnace filters
[Overdue]
MERV is the rating the industry uses to classify the efficiency of furnace filters.The best furnace filters has the highest MERV ratings.A typical fiberglass furnace filter installed in your furnace when you moved in is usually = MERV 1.Minimun should be 8viruses (0.01 to 50 microns) * Odors/Chemical vapors (0.01 to 1 micron) * One Micron = 1/25,000 of ...
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