When used properly, this 20 scfm Personal Air Breathing Unit will work with the existing filtered compressed air supply, providing Grade “D” Breathable Air for a proper NIOSH approved respirator. With the provided 54” tool air hose assembly, it will allow for a bypass of air for a paint spray gun. This will allow for use with full hoods, equipped with vortex cooling tubes if so desired. The unit is also a complete belt-mounted system, with a built-in filter with filter monitor and a carbon monoxide monitor with both audible and visual alarms. Call (800) 831-1525.