The DUAL-AIR cart is ordered complete with a built-in high pressure (5000psi) regulator, 2 high pressure (CGA-347) connect whips with hand tight nuts, and one low pressure connect hose from the regulator. The connect hose attaches to the Breather Box when bottled air is required. The bottled air passes through the filter system and is distributed to the respirators through the Breather Box manifold and regulator system. A rear collapsible hose rack, pneumatic 10" tires, bottle straps, and front storage box are supplied standard on the DUAL-AIR cart system.