Mechanical filter (respirator)

Mechanical filter (respirator)
Face mask (filtering facepiece respirator) FFP3 with exhalation valve
Regulation	42 CFR 84, EN 149, EN 143
NIOSH schedule	TC-84A, TC-21C
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Mechanical filters, a part of particulate respirators, are a class of filter for air-purifying respirators that mechanically stops particulates from reaching the wearer's nose and mouth. They come in multiple physical forms.