A respirator I designed with a colleague during the early stages of the pandemic, when N95 masks were almost impossible to find. The idea was to create a reusable, washable respirator that would use small nonwoven filters to conserve material. Both the inhale and exhale vents were designed to filter air and operate independently via a dual valve system. This would allow users to change filters independently, favoring the use of high quality nonwoven fabrics for the inhale vent or exhale vent depending on their infection status. In this way a Covid-positive user could prioritize filtering the exhale vent and use a cloth or single-ply nonwoven fabric for the inhale vent.

The entire body of the respirator can be made from thin sheets of plastic using a vacuum former. The use of thin gauge plastic, along with the simplicity of the design would allow for relatively easy production of large quantities of masks.