An air curtain is a machine that blows a controlled stream of air across an opening to the other side to create an air seal. The air curtain, also known as an air door or fly fan, is not the same as ...

We wanted to make a curtain so easy that it could be made by your elderly mother,” says Ronan Bouroullec. “Or young daughter,” Erwan Bouroullec adds. “Our mother can actually sew very well.” The ...