Box fan wall/ ceiling mount
thingiverse
Wall mounts to mount a box fan with a 20x20x1 furnace filter on the wall. To use as an air purifier. These are wall mount to use in conjunction with the 20x20x1 filter clips found here. https://www.thingiverse.com/thing:3491620 You will need 4 of the 20x20x1 filter clips from link above. Print 2 of these wall mount assemblies. 2 A's and 2 B's 2 - 1/4" x 20 x 3/4" long bolt 2 - 1/4" x 20 hex nut 2 - 1/4" fender washer 4 - 3" deck screws 4 - #6 or #10 washers. Big enough for your deck screws to fit into.
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