The Ruskin Model CD209-RG is designed for air balancing and control purposes in low/ medium pressure and velocity systems. The opposed blade operation is complimented by foam blade edge seals to facilitate a shut off. Double skin aluminium extrusions provide an aerofoil shaped blade for low resistance and minimum pressure drop characteristics.
The Ruskin Model CDR309-RG is round damper designed for air balancing purposes in low / medium pressure and velocity systems. A single skin blade is securely riveted to bearing pins at both ends with self lubricating nylon bearings, alternatively brass bearings are available.