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Description
This face mask design can accomodate variations in filter thickness to allow available materials to be used. It incorpoates anti-rotation features to ensure the filter material is properly seated and sealed in the mask. The anti-rotation avoids bunching of the filter material as the threaded cover is secured to the mask.
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- Source creator
- hankphelps
- Source license
- GNU GPLv3
Archived copies are shared under the license shown.
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