Roller shutters/door has at least two of the slats interconnected by bands or chains to increase the light and air let through when they cover the window or door

摘要

The roller shutters (10) or roller door is composed of a number of interlinked slats (12,13) forming the screen. At least two of the slats (13) are linked together by strips or chains (14), fitted to the couplings (16-18) at the end sides of the slats (13). The strips or chains (14) ride in side guide rails (11). The roller shutters (10) or door is operated manually or electrically.