Model 50-2 is designed to support two supplied air respirators at the same time. This affordable system is outfitted with a solid-state monitor and four-stage filtration. Built in warning lamps and audible horn to alert users if hazardous gases exceed the preset OSHA levels. This complete system is panel mounted. #75502

Model 50 with 1/2" reg (with one half inch regulator) has the same features as the Model 50. It is outfitted with a larger regulator. This system is designed for on-site plumbed breathing air systems. #75503

Model 50-4 is designed to support four supplied air respirators at the same time. This system boasts the same features as the Model 50. Additionally it is outfitted with a larger regulator and completed with a manifold block and four quick couplers. This complete system is panel mounted. #75504

Model 50-AH is designed to support two supplied air respirators at the same time. This specially designed system is set up for use in blast booth operations where noise levels require the use of an intrinsically safe audible alarm to reach a level of 121.5 dB. #75522