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Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control. Various other Sizes are also discounted. ...Read More >
Amazon [amazon.com] has Purolator A25463 PurolatorONE Advanced Engine Air Filter for $6.75 - $3 when you 'clip' the coupon on product page = $3.75. ...Read More >
Amazon [amazon.com] has Midea 1,500 Sq. Ft. Energy Star Certified Dehumidifier With Reusable Air Filter 22 Pint - Ideal For Basements, Large & Medium Sized Rooms, And Bathrooms (White) on sale for $157.48. ...Read More >