This is a HEPA filter holder for BVMs. I designed this filter holder because of a shortage of commercial products. The filters were 1.25 inch square made from HEPA rated vacuum cleaner bags rated "HEPA Media Traps 99.97% of Particles Down to 0.3 Microns".
Also included is a box for storage of replacement HEPA filters.
I used 75% infill because they were being used by ambulance teams. I used PETG because it is water and chemical resistance. Soaked some in 70% alcohol and some in 25% bleach without any visual affects. Nozzle 260C, bed 70C, flow 60% and cooling 50%
PLEASE NOTE: I do not have the knowledge nor equipment to verify the level of protection!
It is the responsibility of the user to determine the actual level of protection and use it accordingly!