Flanders 84858.012025 NaturalAire Standard Air Filter MERV 1-inch, 20″ x 25″. (Pack of 12)Experience the clean air difference.Pack of 12 quality filters designed for protection of furnace and central air unitsMERV 8 rating: Removes household dust, pollen, dirt, mold spores and morePleated media provides large surface area for more effective filtration while keeping airflow resistance lowEach filter maintains efficiency for up to 90 daysCompatible with HVAC systems requiring filters sized 20″ x 25″ Check the Latest Prices Flanders PrecisionAire 82655.0452025 20 by 25 by 4.5 Air Cleaner Merv 8 Air Filter, Pack of 2Experience the clean air difference.2 Pack of high performance synthetic air filters to help eliminate dust and contaminantsMERV 8 rating: Removes household dust, pollen, dirt, mold spores and moreSelf-sealing gasket for better airflow controlDeep V-pleats provide large media surface area for more effective filtration while keeping airflow resistance lowCompatible with HVAC systems requiring filters sized 20″ x 25″ x 4.5″ Check the Latest Prices Flanders PrecisionAire 84858.011236 12 by 36 by 1 NaturalAire Standard Pleat Air Filter, 12-PackExperience the clean air difference.Pack of 12 quality filters designed for protection of furnace and central air unitsMERV 8 rating: Removes household dust, pollen, dirt, mold spores and morePleated media provides large surface area for more effective filtration while keeping airflow resistance lowEach filter maintains efficiency for up to 90 daysCompatible with HVAC systems requiring filters sized 12″ x 36″ Check the Latest Prices NaturalAire Pre-Pleat 40 Air Filter, MERV 8, 20 x 25 x 4-Inch, 6-PackPack of 6 non-woven synthetic media air filters designed for the highest dust holding capacity and lowest pressure dropMERV 8 rating: Removes household dust, pollen, dirt, mold spores and moreV-pleats provide large media surface area for more effective filtration while keeping airflow resistance lowEach filter maintains efficiency for up to 90 daysCompatible with HVAC systems requiring filters sized 20″ x 25″ x 4″ Check the Latest Prices