Martech 75120 A Personal Air Breathing Unit will work with the existing filtered compressed air supply. It will provide Grade "D" Breathable Air for a proper NIOSH approved respirator, and with the provided 54" tool air hose assembly, it will allow for a by pass of air for a paint spray gun. The Personal Air Breathing Unit is a 20 scfm system. This will allow for use with full hoods, equipped with vortex cooling tubes. It is a complete, belt mounted system, with a built in filter with filter monitor, and a carbon monoxide monitor with both audible and visual alarms. The monitor runs on a single battery, and continuously monitors the air for compliance with current OSHA standards