The Q-Sage Inc. Air Screen Cleaner is engineered to the specific needs of the customer, resulting in an investment that is thoughly utlized. All units feature high tolerance, quality screens and ball tray systems. These are custom made by the Quality Custom Screen Company, the leader in precision made screens and ball tray systems. All Eccentric Components are CNC machined to a tight tolerance, resulting is a straight & true shake action of the screens.