Mask with Filter Box

Updated Mask MKII with Filter Box
Two sizes, one for man (bigger) and one for woman (smaller) each one with his filter box set.
The mask has a box for interchangeable filters, the internal cover of the box (the smallest part) has a convenient grip to facilitate the extraction and exchange of the filters.
I recommend sealing the filter box externally with adhesive tape.
The mask information is provided as research information only and has not been tested for commercial use. The design and masks made from the design have NOT been tested or approved pursuant to FDA, OSHA, or NIOSH standards. The mask Information is experimental in nature and the safety or efficacy for use in humans has not been proven or tested. Users should make every effort to use an available N95 mask if feasible.

The project was made thanks to the interest and contribution of the Lions Club Vallecamonica - Italy

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