Air Curtains   LIRTEK Air Curtains have been specially designed for performance and efficiency when installed in commercial and industrial situations. They control the internal environment by providing a highly efficient linear air flow barrier.    Features Continuous duty Compatibility with the movement of the automating opening doors Units with 2 or 3 speed adjustment are available 800, 1000, 1500 and 2000 mm width alternatives A wide range of fully controllable heat outputs are available with an integral hot water coil, electric    heating or without heating Blowing out internal air directly or by heating door and outdoor installations