I have a pretty big humidor but its filled with more singles than boxes. I found some wire trays at a dollar store and my cigars are stacked in there. If it came in a box it stays in a box but rare for me. This is my long winded way to say make sure you have more media than you may need and spread it thru the humidor. Boxes will absorb some of that moisture too and with little to no air flow your humidity may not be uniform. I have 3-4 hygrometer spread thru mine. I have boveda spread thru out my humidor and I have a Tupperware of silica cat litter the combination of those 2 has not failed me in 5 years.