Filter Holder for 3M Respirator
thingiverse
We are OTG Onthego Limited based in Hong Kong. Because of a severe mask shortage in HKG, people try everything to protect their health. This is ver.3 holder and cap, you may use a Surgical mask ( should be cut into 9 pieces ), size: 4.5cm x 5cm. If you want to breathe more freely, we recommend printing an extra set of filter holders to increase airflow. We have prepared a short video introduction for your convenience. Please excuse the fact that production takes time, so we are sharing this STL file with you to print at home. Thank you. OTG Onthego Limited
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