Feature:1. AC Furnace Air Filter Set: This set includes one reusable frame and 6 pcs replacement air filter, to maintain best filtration, it is recommended to replace the filter every 90 days, enough filters allowing you to use a long time.2. Healthier Life: This AC furnace air filter can work with just about any brand and is perfect for homes with people has allergies and asthma, provide a safer and cleaner living environment.3. Replacement Filters: The replaceable foldable air filter can remove most of the airborne particles including pollen, household dust, pet dander, etc. that can trigger allergy symptoms or asthma attacks.4. Reusable Frame: Reusable and washable air filter frame is made of strong ABS material, can withstand temperatures from 40F to 212F, saving cost.5. Simple Replacement: Just remove the used air filter frame, replace the previous filter with a new one, finally slide the filter into the unit air filter return port.Specification:Item Type: AC Furnace Air FilterMaterial: High Efficiency Particulate Air Filter, ABSSpecification: 16x20x1inFiltration Level: MERV 8.Package List:1 x Frame6 x Air Filter