Specification AgeRangeDescription : adult Brand : Chenzhit BulletPoint : Valves BulletPoint1 : Fits Wide application of air filters18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.75" x 17.75" x 0.75") BulletPoint2 : The filters is suitable for air conditioner, furnace, HVAC filter, air scrubber, dehumidifiers and house vent BulletPoint3 : Easy to install Easy to install and a cost-effective step for your healthy home environment. For best use, please change your air filters every 60 to 90 days, but increase frequency to 30 days during peak summer and winter months. BulletPoint4 : If there is a problem with the product you received, you can contact us at any time and we will deal with it for you. BulletPoint5 : PACK OF 2 FILTERS Color : White CompatibleDevices : Furnace CompatibleDevices1 : Air Cleaner CompatibleDevices2 : Air Conditioner CompatibleDevices3 : Furnace CompatibleDevices4 : Heat Pump CustomerPackageType : 4 ExternallyAssignedProductIdentifier : 30628693577909 ExternallyAssignedProductIdentifier1 : 619988837616 ExternallyAssignedProductIdentifier2 : 0619988837616 ItemName : Chenzhit (4 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.75" x 17.75" x 0.75") ItemPackageDimensions_Height : 44.45 centimeters ItemPackageDimensions_Length : 8.255 centimeters ItemPackageDimensions_Width : 44.45 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : replacement-household-furnace-filters Manufacturer : Chenzhit Material : Paper MinimumEfficiencyReportingValue : 13 ModelName : TGLGTQPX ModelNumber : 18x18x1 NumberOfBoxes : 1 NumberOfItems : 4 PartNumber : 18x18x1 ProductDescription : Fits Wide application of air filters18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.75" x 17.75" x 0.75") ProductGrade : fair ProductSiteLaunchDate : 2024-01-08T12:25:21.033Z Size : 0.75 Style : 18x18x1 4-P M13 SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 4 UnspscCode : 40161505 WebsiteShippingWeight : 0.839 kilograms