Air Chase : refers to the duct that is used to carry either supply air or return air to and from the air handler. This can be fiberglass duct board, insulated metal duct, or large flex duct
Complete Design, Inc. (Construction Design Specialists), Dictionary of Construction Terminology, Washington, USA 2015. http://completedesign.cc/client-resources/dictiona ry-of-construction-terminology, (Const - Amer) {836}