Specification AirFilterConstruction : Pleated Brand : AIRCARE BulletPoint1 : Nominal Size: 19-7/8 x 21-1/2 x 1, Actual Size: 19-7/8" x 21-1/2" x 3/4" BulletPoint2 : Comparable to MPR 1500 to 1900 Ultimate Allergen Defense and Honeywell Allergen Elite FPR 10 BulletPoint3 : Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, smoke, and bacteria. BulletPoint4 : Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months. BulletPoint5 : 100% synthetic electrostatic media for high efficiency with low air flow resistance. Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive Color : White CommonApplications1 : Allergen Reduction CommonApplications2 : High Strength CompatibleDevices : Furnace CompatibleDevices1 : Air Conditioner CompatibleDevices2 : Furnace CompatibleDevices3 : Heat Pump CompatibleDevices4 : Air Cleaner CompatibleDevices5 : HVAC System CustomerPackageType : 12 ExternallyAssignedProductIdentifier1 : 192212078530 ExternallyAssignedProductIdentifier2 : 0192212078530 IncludedComponents : Air Filters IsOemAuthorized : 1 ItemDisplayDimensions_Width : 5 inches ItemDisplayWeight : 0.75 pounds ItemName : 17-1/2 x 23-1/2 x 1 Electrostatic Washable Permanent A/C Furnace Air Filter 17-1/2x23-1/2x1 ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 20 inches ItemPackageDimensions_Width : 18 inches ItemPackageQuantity : 1 ItemTypeKeyword : replacement-furnace-filters Manufacturer : AIRCARE Material : Metal Material1 : Plastic Material2 : Aluminum Material3 : Polypropylene MinimumEfficiencyReportingValue : 13 ModelName : AFB18x20x1M8pk1 ModelNumber : AC171223121 NumberOfItems : 1 PackageLevel : unit PartNumber : AC171223121 Pattern : Electrostatic ProductDescription : Aerostar 19 7/8x21 1/2x1 MERV 13 Pleated Air Filters (Actual Size: 19 7/8" x 21 1/2" x 3/4") - 12 Pack. MERV 13 filters are comparable to MPR 1500-1900 and FPR 10. Alternate Part Numbers: KFAFK0312LRG, FV4, FK4, FC4, FB4, FA4, FH4, FA48NF048, FA4ANF042, FA4BNC042, FA4BNC048, FA4BNF042, FA4CNC042, FB4ANF048, FC4BNB054, FC4BNF042, FC4CNF048, FK4CNF003, FK4DNF005, FV4ANF003, FV4ANF005, FV4BNF003, FX4BNF042, FX4CNF042, FX4CNF048, FYANF042. Designed for superior filtration efficiency, these filters are made with electrostatically charged synthetic material that draws and captures allergens between 0.3 - 1.0 microns, including lint, dust mites, spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria. Aerostar filters are a simple and cost effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms. They also improve the efficiency of your HVAC unit and therefore reduce maintenance and utility costs, by removing dirt and reducing strain on the motor. For best results, change the filter every 60 to 90 days but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest. Compatible with furnaces and AC units. ProductGrade : new ProductSiteLaunchDate : 2016-07-29T17:50:51.878Z RegulatoryComplianceCertification : R37912 Size : 17.5" x 23.5" x 1" Style : MERV 13 SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 40161505 WarrantyDescription : Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues. WebsiteShippingWeight : 1 pounds