Air Curtain An air curtain is modern device which, when installed on a door, forms an invisible curtain of continuous air and thus prevents escape of conditioned air and entry of outside hot, humid, dirty and unwanted polluted air. The cabinets of Air curtain are made of cold rolled Mild Steel sheets. The blowers are made of high quality aluminium sheets, duly balanced both, statically as well as dynamically on computerized digital balancing machines, designed to provide uniform air with minimum noise and no vibration. All units are thoroughly tested at works and meet the highest standard