Web Polyester 8 MERV Pleated High Efficiency Air Filter 20 W x 20 H x 1 D in. (Pack of 4)Web introduces this Eco Filter Plus air filter replacement that is sure to be of great use to you. This 20 x 20 furnace filter has electrostatically charged fibers attracting and capturing dust, mold, pollen, and dander. The furnace filter frame can be reused for up to 10 years with proper care. Simply rinse with water, let dry and reinstall this pleated 20 x 20 x 1 air filter in your HVAC filter system. The AC filter reduces landfill waste and is