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450x450mm

Ventilation Ducting  | Rectangular Ductwork | Roof Duct with Cravat | 450mm Roof Duct with Cravat |  450x450mm



450x450mm Roof Duct with Cravat
CDT450-450


Please use the drop down menus below to select duct length, cravat width, and the connection methods required (we recommend Doby frames as a general connection method, certainly for larger ducts).

The default cravat slope angle will be approx. 35° regardless of size. Please use the "Any other info" box if you'd like to request a change to this angle.

Please use the 'Any other info' box to fine tune the size if necessary.


Duct length



Cravat width



Connection top



Connection bottom




Any other info or specific requirement (optional):



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450x450mm Roof Duct with Cravat
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