Dust filter cover for 3M mask, remix for use with FFP2 material
thingiverse
It is the same as the hex version of Dust filter cover for 3M mask by vyrobca (https://www.thingiverse.com/thing:3982639) but shortened. In the foto you see the original design. I had to cut off part of the rim, because it would collide with the 3M 7502 mask. I am using it with this https://www.thingiverse.com/thing:4215903 or better the remix https://www.thingiverse.com/thing:5222766 (support is easier to remove).
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