Although the air cleaner has been working well, I've been doing more and more work in the workshop lately and I've been needing ventilation in addition to air filtering. Of course I can open the garage doors, but that's not always neighborly or practical.
The previous owners installed a window in the garage and we replaced it with the other windows in the house. Having a window is great, but still not enough.
Last week, I ordered some fans and today, I made a frame to hold everything together to slide into the window frame. The design of the windows makes this quite easy. The flow is great -- over 1500CFMs -- and when not in use, it can be removed. When in place, a simple window lock (and the adjacent window) keeps everything secure and in place.