What is duct stiffener?

A duct stiffener is a structural component used to reinforce and provide additional support to ductwork. It is typically installed along the length of the duct, especially in larger commercial and industrial systems, to prevent it from collapsing under high air pressure or external loads. Duct stiffeners are made of different materials such as galvanized steel, aluminum or fiberglass, depending on the specific application. They are designed to distribute the weight and pressure evenly along the duct, reducing the likelihood of damage or failure. Duct stiffeners are critical components of HVAC systems, ensuring that the ductwork remains structurally sound and efficient in delivering air to different parts of the building or facility.