Duo-Twin Airline Respirator
This combination air-supplied/air-purifying respirator is designed for use with either particulate filters and/or chemical cartridges. Provides respiratory protection against a variety of contaminants, making it popular for pharmaceutical, chemical, petrochemical and nuclear industries. Must be used in adequately ventilated areas with at least 19.5% oxygen. Features a unique, switchable exhalation valve, making it well suited for abatement work.