Mini Series Cross Flow Door Air Curtain 1. What is Air Curtain? Air Curtain is an air fresher equipment, to form an "invisible air door" by running of high speed motor with cross flow or centrifugal blower. It has been widely used in electronic, medicine marking, food processing, precision processing, chemical, business areas and other industry. It can effectively isolate convection indoor and outdoor and keep temperature and humidity. Air curtain is also called air door, air barrier etc. 2. Air Curtain Functions: · Anti-dust · Environmental Friendly · Isolating · Heating · Comfortable · Keep stable temperature · Energy-saving · Anti-insects 3. Cross Flow Air Curtain VS Centrifugal Air Curtain Cross flow air curtain: power saving, the price is 30% less than the centrifugal air curtain. If the using environment is noisy, and the height is no more than 2.5 meters, you can choose cross flow air curtain....