ALAN customizes its products to customers' needs... ALAN Mfg. has been serving the HVAC industry for over fifteen years, offering the highest quality products at the most competitive prices. #1 Supplier for Heating, Ventilating, and Air Conditioning (HVAC) Accessories and Supplies. Alan Manufacturing, Inc., through its nearly quarter century existence, has designed over 1,000 different product's including all standard HVAC dampers, related hardware, duct supports and zone control systems as well as specialized items that meet the needs of its customers. If a special item is not in our catalog, we will utilize our ability to build the tooling to manufacture it for you because your success is our success!