S900BA – NCA Series Volume Control Damper
The NCA 9000 series of volume control dampers was designed to handle light and medium velocity applications better than all other control dampers in its class.
Utilising the HVC standard out-of-airstream linkage, all gears are protected from dust and dirt by being positioned within the channel outer frame, making S900 dampers less susceptible to requiring frequent maintenance than rival units where the linkage is within the airstream.

| Series | S900BA | ||||||
| Description | NCA Series 900 volume control damper | ||||||
| Edition | January 2025 | ||||||
| Material | Galvanised steel frame, aluminium blades | ||||||
| Connection | Square flanged | ||||||
| Standard control method | Lockable blue plastic handle | ||||||
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