Transitions are needed in almost every duct run to change the size or shape of the ductwork. This article explains how to lay out rectangular transitions. A duct run is often kept flat on the top to ...
PITTSBURGH, Nov. 18, 2025 /PRNewswire/ -- "I wanted to create a new dryer duct transition with an adjustable design feature and enough internal volume to allow the dust/lint to drop out of the exhaust ...