The Ipari teljes álarc (industrial full mask) was used by the industry during the Cold War alongside with the Ipari félálarc.
It is a full face mask made of rubber-coated green or light brown colored canvas. The eyepieces can be either plexi or triplex glass in metal assemblies. The harness uses a three-piece adjustable harness hooked up to a small leather center-piece the straps are bolted onto, an additional strap near the bottom would be wrapped around the user's head and was hooked around to provide a tight seal, the elastication is provided by either springs like on the 67M or by rubber bands like on the 75M. The valves are in one black plastic (bakelite) piece. The exhale is on top of the 40mm DIN intake covered with a white plastic piece. It was made in 4 sizes and strangely the sizing is the same as on the 34M so the inverse of the Cold War-era Hungarian sizing.
A lot of different filters made by Medicor (A, B, B2, E, P3,…) were used along with fresh air equipment depending on where was it used. The mask was intended to use with a hose but sometimes photos feature these masks with filters directly mounted on the connector.
Bag and kit Edit
The bag is very basic, similar to the 51M bag just it is smaller and made of green canvas, also there are no inside sections. Antifog soap was used instead of inserts.
It replaced the Ipari gázálarc (34M) in production around 1967-1972 because the 34M was no longer economical with its big aluminium valve house after the Polgári Védelem (Civil Defence) started to use the 60M valve house on the 67M mask. The choice was to make a valve house similar to the one on the 34M out of bakelite. But the designer went further back in Hungarian gas mask development history, all the way to the T. gázálarc. This was probably due to the requirement to ease the use of hoses with the mask so it is better if the filter connector is angled downwards a bit more than on the normal 34M. However, this is not suitable if the filter is directly mounted on the connector because the filter blocks the head tilting forward. After the connector choice the exhale valve cover was probably patterned of the T. gázálarc as well. Later the bekelite valve housing technology was used on the 75M to reduce costs after the production of the 60M ceased.
The mask costed 244 HUF in the early 1980s, compared this to a good wage (2500 HUF) it was quite expensive.