They are called Rolladen Rolling Shutters (or "Jalousien" in German). Most German homes are equipped with Rolladen shades on the outside. provide shade during the daytime with privacy, insulation, and security.energy-efficient, air exchanging (even in the rain), designed to prevent forced entry. installed on the outside of your windows or doors but controlled from the inside, either electronically by switch, remote control, or a pull strap operation.
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