The file 'Plug-in Filter Adapter P-RA 3D Printer Model' is (STL) file type, size is 243.8KB.
This is a gas mask adapter - https://www.draegershop.co.uk/draegeruk/en/GBP/Products/Respiratory-Protection/Respiratory-Masks/Full-Face-Masks/Plug-in-filter-adapter-P-RA/p/6736770 .
Printed and tested. Everything fits right, just like the original from the link above.
Note: Not tested in high temperatures, when firefighting.
Plug-in_filter_adapter_P-RA.STL | 608.2KB |