The Ultimate Furnace A/C Filter - Washable, Permanent, Reusable, Electrostatic = Traps dust like a magnet - 5-Stage - Lab Certified MERV 9 - (13x20x1)

Finally, an electrostatic, washable furnace and a/c filter that is MERV rated!! Introducing the MaxMERV9. The only lab-certified MERV 9 permanent filter. What does MERV 9 mean? It means that this filter traps particles down to 1.0 microns. That includes common allergens like mold, dust mite debris, pollen, pet dander and smoke. Made from rust-proof aluminum and a state-of-the-art polypropylene media weave that achieves MERV 9 filtration and provides good airflow. Move UP to the MaxMERV9 and Never Buy Another Filter!