The Mounting Brackets come in two versions: Model 48002 Fixed System complete with a sturdy stand, vertical support bar, parallel support bar and two movable supports to hold the Dry Air Guns or any other blow-off product from an air knife or amplifier to jets and nozzles. The compressed air is fed in at the bottom of the support with hoses (supplied with the system) feeding the blow-off units. Model 48003 Adjustable System is the same as the above except for the adjustable parallel support bar for totally variable support adjustments to aim the blow-off units wherever they need to be. This simple design allows for tremendous portability and flexibility of use for many blow-off applications.