Perfectly align your sashes every time you use the roll-up on your wood, PVC or aluminum casement windows with hinges 11.1 mm in height. Installed in the hinge cavity located at the corner of the sash, the roll-up ensures proper positioning of locking points, thereby preventing costly service calls resulting from the movement of a sash. Made of nylon and resistant to UV rays, its small “O” ring ensures a smooth closure whenever the window is closed. Rigorously tested, our roll-up achieved over 10,000 cycles without any wear and tear.