The CD series offers a complete range of UL, ULC & California State Fire Marshal listed butterfly blade ceiling radiation dampers. The CD series is suitable for application in surface mount (steel duct drop) and lay-in applications. When provided with the optional adjustable volume control, NCA's CD series can double as a volume control damper.
Available in Square/Rectangular or True Round shapes
Optional adjustable volume control allows damper to double as volume damper.
Optional factory square to round adapters available for easy duct connection (Model CD-RD-T)