http://tinyurl.com/k7ct57o<P>Pro Pack (SR 200 Full Face Mask, SR 232 Cartridge, SR 510 Particulate Filter)Product Review<P> Click on the link for more reviews<P>Non-allergenic, FDA approved Silicone respirator<P>Two exhalation valves for minimum exhalation resistance<P>High-efficiency P100 particulate filter offers ten timesmore filter effectiveness than required by NIOSH. Eachfilter tested for 99.997% filter efficiency<P>Mask can be used with or without supplied chemical cartridge<P>NIOSH approved<P>
