how to convert a dual snorkel full face mask into emergency respiratory mask
This is "For my own emergency DIY and personal use, not tested to any standard or meets any standards, by no means approved, tested or suggested to be effective. Use at your own risk"
this project costed about $50 for me
as of the date of publishing this video, the masks and the filters are available at the following
Mask HJKB K2:
www.amazon.com/HJKB-Snorkeling-Detachable-Anti-Fog-Anti-Leak/dp/B07QQJX81Z/ref=sr_1_1?dchild=1&keywords=hjkb+k2&qid=1586455393&s=sporting-goods&sr=1-1
Filters:
www.cpap.com/cpap-filters/bacteria-cpap-filter-covers