The Portable 20 Gallon 455 4-Way Fogger is a chemical atomizer that uses compressed air (70 CFM @ 80 PSI) and venturi action to draw ready-to-use chemical solution from the tank on the all stainless steel cart. It atomizes the solution and projects it as fine, "dry" fog particles in 4 directions up to 35 feet. This unit features a telescoping mast and can also be used as a 2-Way fogger.