Carrier Round Zoning Damper with Quick Blade Release and Self-Aligning Shaft and Actuator Hub Breadcrumb Home / Products / Residential / Zoning Products / Zone Dampers / Round Motorized Dampers / Carrier Round Dampers Loading... Customer Part Number: DAMPRND08INC-B Brand: Carrier Diameter (In.): 8 Shape: Round System Type: Motorized