Dnd Series - Drop In Non Return Damper

DND’s are shutter type dampers designed to provide an effective back draft seal when used in conjunction with roof mounted fans. The flanged design allows the damper to be mounted as a ‘drop in’ part inside kerbed up-stands.

Construction
Flaps are fabricated from extruded PVC. Frames and flanges are fabricated from anodised aluminium with polymer corner joints.

Damper Selection
To select dampers for specific fans refer to FansSelect our electronic selection software available for download at www.fansdirect.com.au. Dampers are selectable as ancillaries.

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