[john70t]

Misc:
-Five or six latches per side.
-Metal turnbuckle rods on the surface to help keep square.
-Center stop per above.
-Add a row of self-latches between the gates. All attached with a single lift rod to tie top/bottom together.
-Add a drop-bar into pipe-hole both sides. They will also have those standard rotating forks to interlock.

-Full length heavy duty piano hinges. Super strong and ex$ensive. But if something goes wrong they will rip out the side posts before breaking.
-Inset metal arc wheel tracks (must be absolutely perpendicular to the post or it will tear it off). These are generally not a good idea because one little stone will stop it cold and the gate will flex over at the top with momentum.

-Single-piece lightweight gate .
-Folding closet-door linear style gate.