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The SzM-41M (industrial designation OM-14) is a Polish licensed variant of the Russian ShM-41M. It was also similar to the Bulgarian BSS-MO-4U and Hungarian 60M. During the 1970s and 1980s, production ran concurrently alongside the upgraded SzM-41M KF version. Production ceased in 1989.
The mask, (Like the GP-5) is made of latex rubber. It has the larger intake valve like the ShM-41 Soviet mask. The SzM-41M is made to be used with a Soviet GOST hose due to the heavy EO-14 canister filter. It has a metal-colored intake valve (the same valve housing can be found on the SzR2-50), instead of the brown or green color of the ShM-41. The MK-221 is based on the rubber facepiece of this mask.
The EO-14 filter is normally included with a kit. The mask may come with other filters. It is not known by report if this filter contains asbestos-like most coffee can style filters.
The kits commonly came with a light green bag similar to that of the MUA kit, it contains four pockets. One is for the mask, another for the hose, and the last large one is for the coffee-can filter. The last pocket is either for a decontamination kit or medical supplies.