Since four of my shows have been canceled I have spent some time doing some things that I have wanted to do in a long time but have put off.
I have a mini split heat pump in my shop for heating and cooling. It wasn't designed for a super dusty environment like my shop. It has a filter in it but not adequate. When in use I had to blow it out every other day with my air compressor. Came up with this idea. The box hangs on a cleat for easy removal. I used foam around the bottom to seal it up. Time will tell how it works.
I also built this lumber rack on wheel which I desperately needed.