Abstract: A rolling shutter comprises bar-shaped elements which are hooked together by mortise and tenon-type joints in laterally contiguous relation to form a curtain which can be rolled up upon a drum above the lintel of a doorway or the like, the bars consist of synthetic-resin hollow profiles and the mortise is formed with a groove in which a flange of the tenon of the overlying bar engages to rigidify the curtain when the same is fully rolled. When the curtain is raised by drawing the upper bars upwardly, the flange pulls out of the groove to allow pivoting or articulated movement between the bars.