Specification Brand : FAST SHIPPED FILTERS BulletPoint1 : 20x40 - 3 Pack compatible with Dynamic electronic air cleaner 20x40 replacement polarized filter pads refill BulletPoint2 : Actual Filter Size 18.5"x35.5" BulletPoint3 : Filtration Technology: Activated FULL CARBON CENTER & Removes Orders, off gassing, Smoke, Dust Candle Soot and more / Ozone free / Made in USA BulletPoint4 : Replace Every 1 to 4 Months: Depending Local air quality for optimal performance. BulletPoint5 : For Commercial Quotes or Large Orders Contact us through Amazon BulletPoint6 : The products advertised on this page are manufactured by Fast-Shipped-Filters. BulletPoint7 : Fast Shipped Filters is a family-owned business in Swanton, Ohio that has been in the Heating Cooling & Air Purification industry since 1984 BulletPoint8 : The products advertised on this page are manufactured by Fast-Shipped-Filters. Dynamic is a registered mark of Dynamic AQS. Fast-Shipped-Filters is not affiliated with Dynamic AQS. Color : Blue ControllerType : Button Control ControlMethod : touch ExternallyAssignedProductIdentifier1 : 0880363449506 ExternallyAssignedProductIdentifier2 : 880363449506 FilterType : Fiberglass FloorArea : 10 IncludedComponents : 3 Filters ItemName : Fast-Shipped-Filters 20x40-3 Pack compatible with Dynamic electronic air cleaner 20x40 replacement polarized filter pads refill ItemTypeKeyword : electrostatic-filter-air-purifiers ItemTypeName : 20x40 Dynamic replacement filter Manufacturer : Fast-Shipped-Filters ModelName : 20x40 Dynamic ModelNumber : 20x40 DB3 NumberOfItems : 3 PowerSourceType : ac ProductDescription : Fast-Shipped-Filters 20x40 - 3 Pack compatible with Dynamic electronic air cleaner 20x40 replacement polarized filter pads refill ProductSiteLaunchDate : 2024-03-18T17:28:15.916Z Size : 20x40 air cleaner filters SupplierDeclaredDgHzRegulation : unknown