20 inch Box Fan using 4  1 inch Air Filters  Air Purifier
Free     Thingiverse     markaerrington

20 inch Box Fan using 4 - 1 inch Air Filters - Air Purifier

This is a 20 inch Box Fan with 4 1 inch x 20 inch x 20 inch Merv 8 Merv 11 or Merv 13 Air Filters ...

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Jason 'Xaqaria' McSorley