3M Filtrete Micro Particulate Furnace Air Filter - 20x25x1 - New

With a 900 MPR (Microparticle Performance Rating), this is a small price to pay for fresh, clean, filtered air, especially since colder weather is upon us soon so your furnace will be on longer. 3M airflow guaranteed. Clean air is fresh air and fresh air is clean air. Sealed and ready to go. Only $8 obo.