The Zone Control Quick Reference Guide walks contractors through the process of sizing and applying zone control to new and existing systems through step-by-step design directions for all popular methods of pressure relief. Included with the guide is the Damper Size Selector tool, which allows contractors to apply the manufacturer’s Controlled Pressure Relief method.

Aprilaire, P.O. Box 1467, Madison, WI 53701-1467; 608-257-8801;

eProduct #200