V-track and cantilever sliding gates both save space where swing clearance is limited

https://s3.us-east-005.backblazeb2.com/home-blogger/why-iron-gates-sag-and-how-welding-fixes-them.html

V-track and cantilever sliding gates both save space where swing clearance is limited, but cantilever designs are used when a gate must move without a ground-mounted rolling track.