20" X 22" X 1" Lifetime Permanent Washable Filter MINIMUM EFFICIENCY REPORTING VALUE (MERV) RATED AIR FILTER AIRx Filters Washable 20x22x1 air filter are MERV rated to assure customers the effectiveness of our AC Furnace air filters. While the family enjoy a cleaner air, it also adds efficiency in the homes heating, ventilation and air conditioning (HVAC) System MERV RATED AIR FILTER ALLOWS YOU TO WASH AND REUSE TO REDUCE WASTE AIRx Filters MERV 1 20x22x1 AC Furnace air filter attracts and/or removes lint, dust, and pollen QUALITY AIR FILTER MATERIALS AND COMPONENTS AIRx Filters 20x22x1 air filter are 100% Made in the USA using quality air filter materials and components. AIRx Filters Washable use Heavy duty steel mesh and rugged steel frame air filter frame SUPERIOR AIR FILTER CONSTRUCTION AND SPECIFICATION AIRx Filters MERV 1 air filter uses woven polypropylene media. It can withstand 180F (82C) continuous service, peak 225F (107C) and resistant to 100% r.h. EASY SELECTION, MULTI-PACK AND OEM/AFTERMARKET AIR FILTER COMPATIBLE Purchasing an AIRx Filters is easy, AIRx Filters offers various sizes that would fit your AC and/or Furnace air filter need and different multi-pack to fit every budget. AIRx Filters Washable 20x22x1 air filter can replace and/or comparable with Filtrete Basic Filter 20x22x1 air filter