Comply with OSHA air requirements with a Quality Air Breathing System Model 50 SL from Martech. The system works with an existing compressed air supply to provide Grade “D” Breathable Air for a NIOSH-approved respirator. With a 54-inch tool air hose, it supplies spray gun air via its single-line hose assembly. The system has four-stage filtration, and the on-board carbon monoxide monitor continuously monitors air quality. Call (800) 831-1525.