It's slow progress, but im getting there. I have a back injury, that prevents me from working more than a few hours per day.
Cut a good size hole in the wall, for my passive in-take. The plan is to make a simple 4" box filter, that slides into place on the inside of the wall.
I had the pleasure to insulate my room today.
Had to be done, and now it's a job done. Covered the backside with mylar,
for IR reflection and moisture block. Finaly covered the whole thing up, with wood sheets.
Now I need to build the end wall/hidden door, but waiting for rotery hinges ordered on ebay.
Then it just need a litte paint, a few electric wires and some ventilation.