Nice work! I built a "Corsi cube" using 4x 20" filters and a 20" box fan. Some simple extrusions for the filter corners would be a win (and probably a good basi

Nice work! I built a "Corsi cube" using 4x 20" filters and a 20" box fan. Some simple extrusions for the filter corners would be a win (and probably a good basis for a DIY kit). Since the Corsi cube can be hung from the ceiling (it looks weird being a cube hanging up there) but it is ungainly. This is a much more elegant solution.