National Ventilation D694 Inline Back Draught Shutter
For use with any 6 inch 150mm ducting system. Usually used in conjunction with inline duct fans which do not normally come with integral shutters.
May be installed in the ducting from the outside wall as near to the outside grille as possible.
6 Inch Inline Backdraught Shutter
Product Code NVT D694
Order by 4pm - Next working day delivery
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