For this purpose, roller shutters are used.

Huge glass windows allow you to see the entire range of goods without going to the store. Of course, this is convenient for buyers, but the glass is fragile material. And when the working day ends and the darkness is thickening such a window must be protected. For this purpose, roller shutters are used. When they are lowered, this serves as a signal that the store is closed. And the second function of these shutters, which is considered the main one, they reliably protect the showcase from damage. And the store premises, as written in police protocols, from unauthorized penetrations of unidentified persons.