Installed a Titan X-3 folding rack around a doorway with the uprights folding outward; despite stringers on only one or two studs on one side, it is very stable and sturdy, and they recommend it for the money.
“I am extremely happy with this unit and shocked at the stability. It is a very sturdy rack and if installed correctly, even in a unique way like this is, you cant beat it for the money.”