No plans, I just made it work with the materials I had and based the dimensions roughly on this:

https://www.webstaurantstore.com/avantco-cfd10-ten-rack-stainless-steel-food-dehydrator-with-removable-door-1000w/177CFD10.html

Basically build a box roughly that size, come up with some way to make a door on it that has ability to control airflow, then come up with some trays. Cut a hole so the fan of the miner fits in there.

If you have a more powerful miner then you can make a bigger box and add more trays.