Air curtains Controlled shielding from cold air In industrial buildings with transportation and loading operations, as well as in commercial buildings with customers, such as banks, hotels, offices, [...] Air curtains Controlled shielding from cold air In industrial buildings with transportation and loading operations, as well as in commercial buildings with customers, such as banks, hotels, offices, business premises, shopping centres, trade show halls and supermarkets, you cannot prevent doors or gates from being frequently opened and closed or even left open [...]