Dehumidifier v tumble dryer for drying clothes
In our wet Irish climate drying clothes can be expensive, this video shows how to dry clothes indoors and capture the moisture before it enters the room. There is also a basic explanation of the running cost.
The box is sealed off with polyboard and tape, or you could apply 2/3 layers of varnish. The idea being to keep the wood from getting moist.
My dehumidifier is a standard room drier but you can also get ones with a clothes drying function, which would be better.