Avon FM12 CT12 Gas Mask Spare Part Secondary Speech Module CBR NBC ABC S10 N10

However, the voice emitter and exhale valve cover is smaller than that of the S10, as are the lenses. The FM12 has an overall lower profile than the S10 and sits closer to the wearer's face. The FM12's drinking tube is also longer than that of the S10, making drinking easier while wearing the mask.

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