Types of StiffenerSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedJan 24, 20231 minute readEngineeringE3D DesignE3D Design 3.1 The stiffeners available for use on the HVAC components are listed below: Related LinksPre-defined StiffenersUser-defined Stiffeners