Dry Aging Whole Prime Rib (7 bone roast).

[Ron Pratt]

Welcome aboard!
Please familiarize yourself with this handy Q & A section.
https://www.drybagsteak.com/drybag-steak-faq.php#6

As for size the Ribeye/strip bag is 12×24″ and the short loin is 16×28″.

As for removing the bones first that works better since the removal will dry the ribeye more uniformly plus eliminate the possibility of puncturing the UMAi Bag.
Ron