AAF International is the name recognized globally for quality, expertise; and innovation in air filtration. As the world's largest manufacturer of commercial, industrial, and residential air filters, AAF International makes a wide variety of products for removing and controlling airborne contaminants.\r\n\r\nWe've been around for 75 years delivering clean air, and we're working everyday to develop the products and services to deliver clean air in the 21st century.\r\n\r\nIn North America, call toll free 888-AAF-2203. AAF is ISO Certified.