In combination with visible Chrono hinges and Chrono Invision Pro hinges. With Chrono Invision Go hinges if the opening angle must be restricted to less than 90°. Restricts the opening angle of the window in turn position. Should be used for safety purposes or where the opening arc may be obstructed. The position of the stay will dictate the opening angle of the window. The window stay is detachable by turning rivet R with a 4 mm hexagon key. Provided an incorporated adjustable friction by tightening the screw S. Important! Tighten the clamping screws (grub screws 2.5 mm) of the frame part with a force of 1.75 Nm +/-0.25 Nm.