Head Assembly OnlyThe Occupational Health and Safety Act clearly includes breathing air quality and the provision of PPE as an employer responsibility, making the use of this type of equipment a priority for all concerned. The AF2010 HEAD is a Class LDH3 safety device which provides a protection factor of 200 times the occupational exposure limit. All Anest Iwata air fed masks are fitted with double action safety couplings to prevent accidental disconnection of the air