22 North Exhale Port Filter¶
Very few residents in our high-rise apartment building wear any kind of face covering in the elevators, hallways and common areas. To protect ourselves and others from virus transmission, Gaddy and I wear North RU6500 Full Facepieces with N95 filters. However the RU6500 has no filter on the exhale port, I designed a exhale port disk filter holder to address this. I carefully inspected the sealing surfaces and airflow areas of the existing inhale filter holder geometry to mimic it as much as possible.