This gas spring controls the opening and damping of a cab window on an agricultural tractor. It is installed between the window frame and the cab structure, where its pneumatic cylinder provides controlled resistance during the opening stroke and holds the window in the raised position. A worn or leaking gas spring causes the window to drop or slam shut, reducing operator comfort and posing a pinch hazard. The spring is manufactured by JAG to match the original mounting geometry and gas charge pressure, so it maintains the same opening force and damping rate as the factory component. On installation, ensure the ball sockets or threaded ends are clean and that the spring is oriented with the piston rod pointing downward to maximize service life.