I store the 55lb bag of this flour in this 47qt container: https://www.amazon.com/dp/B07QJMXS7R?ref=ppx_pop_mob_ap_share

Works great! Fits the whole bag so no need to empty it. Has wheels so I can stash it away when I don't need it. I'm happy with it. I'm on my second 55lb bag and this solution is still good for me. No need for refrigeration I don't think, I haven't had an issue (NY here).

I bought that big bag of caputo and it fits perfectly in this (bag and all): IRIS 47 quart Airtight Pet Food... https://www.amazon.com/dp/B07QJMXS7R?ref=ppx_pop_mob_ap_share

It’s easy for me to wheel it out to make dough and then tuck it away again.