The BLS Filtering face pieces can be used to protect the user from solid or liquid nonvolatile particles up to 12 times the Threshold Limit Value. Elastics harness attached at four points, internal nose clip and seal ensure an excellent fit for most physiognomies. The dual size is designed to achieve the best fit testing results. Standards = EN 149:2001+A1:2009 Nose gasket
Rigid inner core
Rubber elastics
Available with exhalation valve
Internal nose clip
Three flap flat design