Features 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 ‑40°F to 212°F, 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 Filter Material: High Efficiency Particulate Air Filter, ABS Specification: 16x20x1in Filtration Level: MERV 8 Package List 1 x Frame 6 x Air Filter