Nested blade array – change width, blades multiply automatically.
Parameters controlled: Width, Height, Blade Angle (0–90°), Actuator Type, Leakage Class. volume control damper revit family
0:00 – Why VCD families are often wrong 0:45 – Choosing the right template (Duct Accessory) 1:20 – Setting reference planes & dimensions (W, H, blade depth) 2:10 – Creating the blade array with angular parameter 3:05 – Adding duct connectors and flow direction 3:45 – Pressure drop lookup table (Type Catalog) 4:30 – Visibility graphics for Coarse/Med/Fine 5:15 – Testing with different duct sizes 5:50 – Adding actuator (nested family) 6:30 – Scheduling & shared parameters 7:00 – Download link & outro Nested blade array – change width, blades multiply