The Respiratory Protection hoods together with the SR 500, SR 500 EX or SR 700 motorized equipment are part of the Sundström PAPR (Motorized Equipment) Respiratory Protection equipment .

A breathing hose connected to the motorized equipment and the hood harness generates pressure that prevents the penetration of particles and impurities.

The SR 601/602 Hoods together with the motorized equipment provide a Nominal Protection Factor 500 TH3