miniPAPR_V4

Update 3/22/20:
New V5 coming very soon. Features fewer individual parts needed to print. Easier to seal with built in trenches for adhesive caulking. Improvements to structural integrity.
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Update 3/21/20:
Improved seal on the connection between fan and filter.
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Update 3/19/20:
Making changes to the piece that connects the fan inlet to the filter.
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March 18, 2020:
The goal of this project is to make a low cost, fully functional PAPR system that can be made with common parts and a hobby grade 3D printer. I started this project a few days ago because there is a shortage of N95 masks during the ongoing COVID-19 pandemic.

What is PAPR?
From Wikipedia: "A powered, air-purifying respirator (PAPR) is a type of personal protective equipment used to safeguard workers against contaminated air. PAPRs consist