If you cant find a box you can make them from concrete tubes available at Loews or homedepo they are 42" long and come in many sizes in diameter they are out of heavy cardboard and can be cut to size with a jig saw or a table saw add a top and bottom and it makes great very very very strong hat box. I used these when i traveled and sold Garb and hats. Just a thought if you cant find a box. Oh do you buy your hat blanks or make them? Please e mail me if you make the blanks Thank you. Lady Marion email@example.com
Wonderful, wonderful hats!