Compliance with the OSHA requirement for Grade “D” Breathable Air can be accomplished with the use of a Quality Air Breathing System Model 50 Sl. When used properly, the system will work with the existing compressed air supply to provide breathable air for a NIOSH-approved respirator, and with the provided 54-in. tool air hose, it will supply air for a spray gun, all via the included single line hose assembly. Model 50 SL systems are available with a 35- or 50-ft. single-line hose assembly. Call (800) 831-1525 or visit www.breathingsystems.com.