For fixed locations where airborne contaminates are a major concern, a cascade system is an ideal choice. This system includes a rack that will hold 2 K-sized compressed air cylinders. The cylinders are rigged with appropriate regulators and up to 300 feet for hose. A weatherproof protective case is also attached to the rack containing a supplied air respirator. The rack can also be mounted with a fire extinguisher, first aid kit, or other equipment desired.