Air Curtain is Specifically Designed to Create A Powerful Vertical Stream of Air that acts as a Uniform, Noiseless and Invisible Barrier along the Doorway thus Effectively Preventing Escape of Cool Conditioned Air to the Outside. This High Velocity Cushion of Air also Helps in Preventing Dust, Insects, Smoke, Odour, etc from Entering Inside. These Air Curtain are Available in Commercial / industrial models