I would advise you not to connect the mount for a steel rig like this one to the rig. So either one that stands on its own or is screwed to the wall. The mount for one screen is actually too far away from the eyes and the screen wobbles a bit when a lot of force is applied. With a mount for three monitors, it would wobble a lot. So this is not a purchase recommendation for the monitor mounts from Oplite itself. Lg
The standard scope of delivery does not include a screen mount. You have to order it separately. But you can choose whether you want one or three mounts.