Specification Brand : Premium Guard BulletPoint1 : PUREFLOW HVAC Home Air Filters by Premium Guard are designed with four advanced filtration layers. A high-efficiency layer with a MERV 13 rating, is capable of stopping more than 90% of contaminants at sizes as small as 3 microns. BulletPoint2 : FRESHENS AND REMOVES ODORS by utilizing activated charcoal which adsorbs harmful gases like carbon monoxide and sulfur dioxide. This layer is combined with baking soda to absorb bad odors from cooking, pets, and smoke. BulletPoint3 : ADVANCED FILTRATION TECHNOLOGY provides a healthy home atmosphere, ensuring you're breathing clean air, while keeping your household comfortable and HVAC system operating efficiently. CompatibleDevices : Air Conditioner ExternallyAssignedProductIdentifier1 : 846156085948 ExternallyAssignedProductIdentifier2 : 0846156085948 ItemName : PureFlow, Home Furnace Air Filter 20x20x4, with 4 Layers of Advanced Filtration Technology, MERV-13 Pack-of-1 ItemPackageDimensions_Height : 53.848 centimeters ItemPackageDimensions_Length : 12.192 centimeters ItemPackageDimensions_Width : 52.324 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : replacement-household-furnace-filters Manufacturer : Premium Guard MinimumEfficiencyReportingValue : 13 ModelNumber : HV20204 NumberOfItems : 1 PartNumber : Premium Guard ProductDescription : Our PureFlow filters block 99% of particles before they enter the interior of the vehicle through way of the heating and air conditioning system. ProductSiteLaunchDate : 2021-08-10T08:56:50.921Z Size : 1 Count (Pack of 1) Style : 20x20x4 UnitCount : 1 UnspscCode : 40161505 WebsiteShippingWeight : 2.2 kilograms