The AAF-HermanNelson unit ventilator from this Minnesota-based company was designed to offer quieter operation, added cooling capacity, chassis strength and more. A completely redesigned air moving system greatly reduces sound levels, while a new coil design adds cooling capacity. Sectionalized front panels provide maintenance and service personnel easy access to the unit interior. Valve or face and bypass damper control are available.

McQuay International, 13600 Industrial Park Boulevard, Minneapolis, MN 55441; 800/432-1342;