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As of Sep 23, 2026, 13:39 UTC, Filterbuy 20x30x1 Air Filter MERV 11 Pet & Allergy Defense (4-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.63 x 29.63 x 0.75) is $44.96 at Amazon, 10% below the $49.96 list price.
Lowest recorded: $44.96 · 9 price points tracked
This four-pack of air filters measures 20x30x1 inches and provides MERV 11 filtration for HVAC systems. It suits homeowners seeking replacements for furnace and air conditioning units with pet and allergy defense.
Review the current listing for filter specifications and availability before ordering. These air filters have been discounted at Amazon previously, and this page updates automatically if another deal appears.
