You need a minimum width of 10ft. 6in. to fit HomeCourse with its Pro-Arms fully extended. It is recommended to mount the screen 18 inches from a wall to provide space for impact absorption. Beyond that, you just need room to swing a club freely–front, back and above. Typically, an area with 10ft. 6in. (W) x 12 ft (D) x 8ft. (H). is sufficient, but everybody is different, and so are their swings, so you must test your space before installing HomeCourse. The unit must be installed no more than 8 feet from the ground, so the bottom of the screen touches the ground. It can be mounted lower, as well, which provides some extra slack at the bottom and is okay.