Half mask, threaded connection, SRF type
Protect the airway with a suitable filter nuisance and its concentration in the work environment: toxic gases and vapors, particles (dust, solid and liquid particles dispersed in the air stream). The use is permitted in environments without oxygen deficiency (minimum 17% oxygen in the breathable air).
The filter can be mounted on the respirator must weigh 300 g and maximum standardized and screwed 40x1 / 7 "according to EN 148-1 / 2000. Product certification was done according SR EN 140: 2003 / AC: 2003.