Scott Safety’s PF10 P3 Particle Filter protects against solid and liquid particles of toxic agents, radioactive substances and microorganisms, e.g. bacteria and viruses. Low breathing resistance. The standard 40mm thread makes it suitable for use on the Duraflow, Proflow and Autoflow PAPR systems, the entire Full Face Mask range, and the Profile40 Half Mask. Marked ‘R’ for re-usable.