iO HVAC Controls D-Z1-2810 28 X 10 Two-Position Zone One Damper AssemblyiO HVAC Controls D Z1 2810 ACTUATORS ARE INSTALLED ON 2ND DIMENSION 28 x 10 Two Position Zone One Damper Assembly Height: 28 Width: 10 Total Size: 28 x 10 Actuator Placement on the dimension: 10 Additional Information Item NumberD Z1 2810 BrandiO HVAC Controls MotorizedYes ShapeRectangular Size (in)26 x 8 Spring ReturnNon Spring Return TypeRectangular Dampers