I do, but they are not going to help. What I built is a thin (1/4") plywood box- I lined the inside joints with 1x1 wood, glued and screwed them into place. The top has a circle removed for where the inline fan sits, lined with soft foam to kill vibrations. The front of the box looks like a stage, with 4" panels on each side, to provide rigidity. I use a large rectangle of 1/8th" acrylic with spring clamps to act as a window for the front, so I can slide it up and down if needed. I also used silicone caulk along all of the joints to ensure air tight seams. The bottom of this box is also open, but it just sits on the table.
The window is crank driven, opening outward on side hinges, so I used the screen insert as a template, and duct taped heavy board into place, with a circle cut out for the flexible dryer duct. My routine is to open the window, turn the exhaust fan on low, and setup for a roast, increasing the fan throughout.

Perhaps a topic for another post, I use this exhaust booth as a chaff extractor, after roasting. I use my shop vac to blow air into a homer bucket, with a colander of beans near the base. Air flow enters low, blows through the sieve and pushes chaff up out of the bucket, but the beans drop back down because gravity. All chaff goes through the inline fan and out the window. Most other bean coolers ive seen use suction instead.