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The purpose of this facepiece is to give the civilian respiratory and facial protection against war gases. It is used in conjunction with a civilian canister.

There are no markings of any significance for identifying the facepiece. Manufacturers' and goverment markings are present, including the size, M (for men), F (for woman), and K (for children), embossed on the connecting piece and on the inside of the facepiece between the two eyepieces.

The facepiece is of the hood type and is composed of two rubber sections vulcanized together at the joints. The hood proper is constructed of green rubber; while the heavier portion of the facepiece, containing the eyepieces, outlet valve, and connecting piece, is of green rubber coated fabric. There is no head-harness, but a rubber adjusting strap is located at the upper rear of the hood. The eyepiece are plastic and held in place by aluminum eyepiece rims interlocked and crimped to the facepiece. Spring metal fastening rings holds the anti-dim discs against the inner surface of the eyepiece.

A green lacquered aluminum connecting piece contains the rubber disc inlet valve and a threaded for direct attachment of the VN canister. The connecting piece is joined to the facepiece by means of an aluminum band. A rubber flatter valve situated above the connecting piece serves at the outlet valve.

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