3M Versaflo Respiratory Hardhat Assembly M-305, with Standard Visor and Face seal 1 EA/Case Used with an approved air source, M-300 Series hardhats provide respiratory (OSHA APF=25) and limited head (ANSI Z89.1-2003 Type 1 Class G) and eye (ANSI Z87.1-2010) protection. The M-305 assembly includes a standard visor and standard face seal. Country of origin: United States