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The 3M Filtrete 24x30x1 is a pleated HVAC furnace filter rated MERV 10 and MPR 800, aimed at capturing dust, lint and pollen while keeping airflow high. This listing is a 4-pack, so it covers a full year of quarterly changes. The best new price is $39.76 at Walmart as of November 7, 2026, about $10 per filter, which is low for MPR 800 in this size.
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Lowest price we've seen: $39.76 on Nov 8 at Walmart. Tracked across 1 store since Nov 8.
Owners of Filtrete MPR 800 filters generally report less visible dust and steady airflow compared with cheap fiberglass panels. Complaints center on how quickly the filters load up in pet households and on the cost of frequent changes.
