I never have stuffed them full but they can easily hold an OZ and a 60gm Boveda pack. I usually grab as big a handful as I can out of the bucket to refill and each lasts for a couple months since I have 2 of them currently. They’re about 6" dia at the widest point and about 3" deep.
Seeing as how 1 of those humidors out of those pictures above can range from 15-20 to 99. I’m thinking about mounting some of these in a cabinet down cellar now that I’ve been looking at other options. They aren’t nearly as decorative or stylish by any means though so maybe not. I have simple tastes. I prefer the best of everything!
It says keeps fresh for 45 days but I’ll bet with a 8gm boveda pack or 2 in each tube it would be fine for a year+
I’d really like something like a penny candy store setup in a counter-top trunk or something but it’s impossible to get truly airtight containers of that style.