The rubber moulded facepiece is of the flat moulding design. The eyepieces made of celluloïd are thightened by means of alluminium pressed rings

The Bakelite front piece box is identical to the FATRA FM common masks unless the exhale valve cover who is marked VERNON in place of FATRA

The mask was issued with several models of French or Czech filters

It is carried in the common French cylindrical can