Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4260234.

<img src="https://cdn.thingiverse.com/assets/03/63/ea/48/15/featured_preview_HEPA_Polygon.gif" /> <H3>Yet another Covid-19 mod for anyone with Ambu Mask or BVM handy.</H3>

(--- DISCLAIMER ---) Print and use it at your own risk.

This is a remix from HEPA for Valvy : https://www.thingiverse.com/thing:4196325 https://www.thingiverse.com/thing:4238747

HEPA STL attachment outer circular diameter 22.4mm. Customise to any size by scad.

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***The requestor for this remix is LifHkr