Interior air filtration

Since we’re coming up on winter and we won’t be keeping the doors/windows open, both for COVID and general air quality considerations I think it would be a good idea to build an air filtration unit for the space. I have a 24 x 24 x 6 H14 aluminum framed HEPA filter I’d be willing to donate, and I can build the unit, but we need a furnace fan/blower to move the air as well as some pre-filters. If anyone has connections to an HVAC company or something that has any 5-600+ CFM blowers sitting around, let’s get it going.

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Update: I have acquired blower

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