Sure it a hell of a lot cheaper than the boveda ones too for the capacity.I took the plunge and ordered one. I'll post back when it arrives.
I have some of that rope caulk at home I think that’s the route I’m going. If it’s too thick I might try to layer some masking tape around the edge.I kind of thought that would be an issue, even thought about building one. Maybe you can use a piece of felt as "weather stripping" or a very thin bead of flexible caulk if you use double side tape to secure the felt it can removed so you can return the humidor.