Comply with the OSHA requirement for grade “D” breathable air by using a Quality Air Breathing System – Model P-20, Personal Air Breathing Unit. When used properly, it will work with the existing filtered compressed air supply. A 20 scfm system, it can be used with full hoods and equipped with vortex cooling tubes. It features a built-in filter with filter monitor and carbon monoxide monitor with audible and visual alarms. Call (800) 831-1525 or visit www.breathingsystems.com.