The Martech Services Co. Quality Air Breathing System, No. 50 SL, will provide Grade "D" breathable air for a NIOSH-approved respirator, and with the provided 54" tool air hose, it will supply air for a spray gun, via the included single-line hose assembly. Model 50 SL systems are available with 35' and 50' single-line hose assembly. A Model 50 SL will work with the existing compressed air supply. The four stage filtration filters the air, and the on-board carbon monoxide monitor continuously monitors the air quality for compliance with current OSHA standards. This system has a one-year warranty.