Four decades of constant refinement and proven performance make the Dual-Pneumatic Air/Water Atomization System the ideal, energy-saving solution for your humidification problems, especially in open-space applications. If you have horizontal evaporative distances of 10 feet or more and vertical clearances of over 6 feet, the Dual-Pneumatic is your choice. The system uses compressed air and water with atomizing heads to automatically discharge microsheared water droplets into the air when the relative humidity drops below the humidistat setting. (We've even achieved 34o°F at 98% relative humidity.) This produces an evaporative cooling effect on the surrounding air and raises the relative humidity without excess moisture.