74 – understood, but wanted to add to it in case further mods might lead to exceeding the limits of the ceiling/sides or other readers had their own ideas on construction. The graywolf link was good – they’re like a beer can on the sides; it doesn’t take much. Better safe than sorry…
Arms discourage and keep the invader and plunderer in awe, and preserve order in the world as well as property... mischief would ensue were the law-abiding deprived of the use of them.
- Thomas Paine