4 Inch 'No Resist' Back Draught Grille - White

The 'No Resist' back draught grille has been designed to both prevent back draughts and reduce resistance offered by standard gravity grilles.

It dramatically improves performance levels of all extractor fans and in doing so, makes them more energy efficient compared to standard fixed or gravity grilles.

We recommend the use of duct clamps with all ducting and grilles.

Please note that these grilles are not suitable for a soffit installation.

Dimensions
Width: 149mm
Height: 149mm
Spigot Diameter: 98mm