Coffee Can Style Russian GP-4y Gas Mask Filter

This is a model of the GP-4y Russian gas mask filter that was produced during the 60's and 70's. It is a coffee can style filter, which refers to it looking like a coffee can.

For printing I recommend placing it on its side, so it can print with minimum supports.
FEATURES:
GOST 40mm thread
Bottom hole is the same size as most bottom plugs for 40mm filters, so the rubber stopper for old GOST filters, or the generic NATO plugs should work for closing the hole.

The thread was gotten from t