Flanders PrecisionAire EZ Flow II Furnace Filter, 20 In x 25 In. x 1 In. is a reliable solution for maintaining clean and efficient indoor air. Crafted with exceptional quality, the filtering medium consists of continuous filament spun glass, ensuring optimal filtration performance. Built to last, the frame of this filter is constructed with one continuous piece of chipboard, guarding against corner separation. This sturdy design ensures a snug fit and reliable performance, so you can enjoy cleaner air without worrying about air leakage. The furnace filter effectively filters out common airborne allergens and pollutants, including pollen, pet dander, dust, lint, and dust mites. Model Number: 120251