Airsan Home Page Looking for a permanent air filter? You've come to the right place! ??????????? Thanks for visiting the Airsan website. Airsan Corporation designs and manufactures permanent air filters for industrial and HVAC use. Airsan has been in business for more than 50 years and is known for the custom design and engineering of filters for customer applications. © 2001 Airsan All Rights Reserved For Questions, comments or suggestions, email us at info@airsan.com or phone 1-800-558-5494. Click Design Services to Specify Your Specific Filter Needs
