This headgear integrates hardhat, face shield, welding shield and respirator when used as directed This headgear can be used with 3MTM GVP-Series, or 3MTM AdfloTM Series Powered Air Purifying Respirators (PAPRs), or 3MTM Supplied Air Respirator Systems It has an assigned protection factor of 25 when used with 3MTM Adflo-Series PAPR, and a protection factor of up to 1000 when used with 3MTM GVP-Series PAPR or 3MTM Supplied Air Respirator Systems