Filtrete MERV 11 Air Filter 20x30x1 Inch 2-Pack

• Amazon now offers Filtrete MERV 11 Air Filter 20x30x1 inch 2-Pack, now $11.65 (regular price $33.28).
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: If you have cats or dogs at home, this filter does a great job trapping pet dander—you can see a layer of dust on the used filter. Replacing it every three months helps maintain the efficiency of your AC and heating system. Pair it with the Filtrete app to set a reminder, so you won't forget when it's time to swap it out.