Covid FaceMask

This mask utilizes an end user supplied filter.
Any material cut into a 38mm / 1.5'' circle can be used as a filter.
Filter material is placed into mask, and Filter Cover is pressed into place securing filter.
Mask utilizes a standard CPR mask valve (https://www.amazon.com/gp/product/B084BVQLBP/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1)
Exhaled breath does not return through filter greatly increasing filter life.
Any 10mm / 3/8'' strap can be used.
Any money donated will be used to buy filters and filament
Printer is running 24/7 and all masks are given away to healthcare warriors for free, no one is ever charged !!!!!!!