Fired by Corona Masks by jmehl

Last crawled date: 5 years, 8 months ago

Use at your own risk. These masks are not NIOSH (National Institute of Occupational Health & Safety) or FDA approved. This type of mask has not been tested for effectiveness or safety. Respirators or masks can make it difficult to breathe due to carbon dioxide build-up and can be dangerous and could even lead to death. People that are pregnant or who have chronic respiratory or other medical conditions should not use.
Thousands in use by major regional medical systems.
If using an FDM printer with .4 mm nozzle, make sure to use at least 4 shells/walls for maximum impermeability.