Circular Volume Control Damper

• Single-blade butterfly design for circular ductwork
• Galvanized steel or aluminium blade and spigot
• Manual locking handle with position indicator
• Motorized actuator option available (24V/230V)
• Diameter range: Ø100mm to Ø630mm
• Mounts directly onto round duct spigot
• Low pressure drop in open position
• Suitable for supply, extract, and transfer applications