BFO/BUYFILTERSONLINE AIR Filter Pleated Foam Permanent Washable Beats ELECTROSTATIC Lasts Forever Aluminum NOT Rusting Galvanized +Free Super Microfiber DUSTING Cloth (20X30X1) PERMANENT LASTS FOREVER SAVES YOU 100'S OF DOLLARS WASHABLE - SIMPLY RINSE AND REUSE PLEATED DESIGN FOR HIGH AIRFLOW & LOW RESTRICTION ALUMINUM METALS WILL NOT CORRODE LIKE OTHERS WITH GALVANIZED!