Specification Brand : GeneralAire BulletPoint1 : Genuine Generalaire / ReservePro Filters 4551- exact size of 4501 BulletPoint2 : Nominal Size: 20" x 25" x 5" (Actual Size:19-5/8" x 24-3/16" x 4-15/16") BulletPoint3 : MERV 11 BulletPoint4 : MADE IS USA CompatibleDevices : Furnace ExternallyAssignedProductIdentifier1 : 683786045511 ExternallyAssignedProductIdentifier2 : 0683786045511 ExternallyAssignedProductIdentifier3 : 00683786045511 IncludedComponents : Air Filters ItemName : 3-PK ReservePro 4551 (old #4501) 20"x25"x5" Air Filter-Actual Size= 19 5/8" x 24 3/16" x 4 15/16"- 6FM2025 ItemPackageDimensions_Height : 16 inches ItemPackageDimensions_Length : 26 inches ItemPackageDimensions_Width : 21 inches ItemPackageQuantity : 3 ItemTypeKeyword : replacement-furnace-filters Manufacturer : ReservePro Material : Pleated Media MinimumEfficiencyReportingValue : 11 ModelName : 4551 ModelNumber : 4551 NumberOfItems : 3 PartNumber : 4551 ProductDescription : GeneralAire 4551 Whole House Air Cleaner Filter is also known as: GeneralAire 4551 RESERVEPro 20x25x5 Furnace Filter. GeneralAire 4551 - 5FM2025 MERV 11 Replacement Filter. GeneralAire MAC2000 4551 Furnace Filter. Generalaire 4551 5FM2025 20 x 25 x 5 MERV 11 Media Air Filter for MAC2000. GeneralAire 4501 20” x 25” x 5” MERV 10 Filter Media. ProductGrade : new ProductSiteLaunchDate : 2015-07-21T16:48:23.634Z Size : 3 Count (Pack of 1) SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 3 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 : 9 pounds