Stiffener Types (Catalog)Save PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedJun 14, 20231 minute readEngineeringEverything E3D 2.0 The stiffeners available for use on the HVAC components are listed below: Related LinksPre-defined Stiffeners (CAST)User-defined Stiffeners (CAST)