Cable-type shutter

Sealed-line is pure manual shutter shutter, roll up the cord to start and have to rely on people to operate. Rod group two tracks in sliding, rolling bar set by the friction with the track can be stopped at any height; another shutter are two ends of rope, such a shutter is also the name of the resulting, wire rope with guide, to prevent the cord oscillation; second wire also acts hinder the role of shutter automatically rolled up. Such shutter curtains are widely used in the train windows.