The Radex Airline Filter from RPB can be customized to suit a number of breathing requirements including Grade D, As1715, EN12021, and Iso8573.1 Class 1, 2 3. The RPB Radex Breathing Unit features a unique twist and lock mounting system so it can be floor or wall mounted without the need for bolts. The large capacity 6 stage filter cartridge removes moisture and particulates to 0.5 micron and odor from the compressed air stream, providing clean breathable air. Breathing Line not included in price.