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External Ventilation Grille - National Ventilation - Cotswold Sand

External Ventilation Grille - National Ventilation - Cotswold Sand

External Ventilation Grille 150 mm/6 Inch Cotswold Sand. This larger sized grille is designed for ...

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National Ventilation F6904C 6"" 150 mm External Ventilation Grille Cotswold Sand

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B&QB&Q - F6904C External Ventilation Grille 150 mm/6 Inch Cotswold Sand
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Product Information

Full details

This guide is for homeowners and installers seeking an effective and discreet external ventilation solution. The National Ventilation External Grille in Cotswold Sand provides robust weather protection and insect screening for 150mm (6-inch) ducting, blending seamlessly with exterior aesthetics. A key benefit is its concealed fixing system for a clean finish. One caveat is its specific 150mm duct size requirement.

All features

ColourBeige
Model Part NumberF6904C
BrandNational Ventilation

Extended Product Information

FAQs

What size ducting does this grille fit?

This grille is designed to fit standard 150mm (6-inch) diameter ducting.

Does it come with screws for mounting?

Mounting screws and wall fixings are not typically included, as the required type depends on your wall material. Please use appropriate fixings for your specific installation.

Can I paint the grille?

While the grille is designed to blend in, painting is not recommended as it may affect the material properties or aesthetics. It is manufactured in a neutral Cotswold Sand colour.

How do I clean the anti-insect mesh?

You can gently clean the mesh with a soft brush or by carefully rinsing it with water if the grille is accessible. Ensure it is dry before reassembly or use.

What are the overall dimensions of the grille?

The grille dimensions are 200mm wide x 200mm high x 30mm deep.

Is this grille suitable for high-wind areas?

The grille is designed for external use, but its secure mounting and robust design contribute to its performance in various weather conditions. Ensure it is securely fixed to withstand strong winds.

Troubleshooting

Grille feels loose after installation

Ensure appropriate fixings for your wall type are used and tightened securely. Check that the duct is properly seated and not exerting undue pressure.

Insects are still entering the duct

Verify the anti-insect mesh is intact and free from damage. Ensure the grille is sealed correctly against the wall to prevent gaps.

Poor airflow despite clear ducting

Check the anti-insect mesh for any accumulated dust or debris that might be restricting airflow. Clean the mesh as per care instructions.

Water ingress around the grille

Ensure the grille is mounted flush against the wall and that any sealant applied is intact. Check for damage to the grille or wall opening.

Pros and Cons

Pros

  • Discreet and attractive Cotswold Sand finish
  • Integrated insect mesh for pest prevention
  • Concealed fixings offer a clean aesthetic
  • Robust build quality from a reputable brand
  • Designed for standard 150mm (6-inch) ducting

Cons

  • Only compatible with 150mm (6-inch) ducting
  • Requires appropriate mounting hardware (not always included)
  • May require cutting a precise opening in the exterior wall

Setup, Compatibility & Care

Setup:

  1. Identify the location for the external vent, ensuring it aligns with the internal ducting.
  2. Mark the outline for the required opening, considering the 200mm x 200mm grille dimensions and the 150mm duct connection.
  3. Cut the opening in the exterior wall. Ensure it is sized appropriately for the duct and grille.
  4. Insert the 150mm duct through the opening.
  5. Position the grille over the opening, aligning the concealed fixing points with the wall surface.
  6. Secure the grille using appropriate screws and wall fixings (not supplied), ensuring a firm attachment.
  7. Ensure the duct is securely connected to the rear spigot of the grille.

Compatibility:

  • This grille is specifically designed for use with 150mm (6-inch) diameter ducting. It is not compatible with other duct sizes.
  • Ensure the wall material is suitable for mounting and can support the grille securely.

Care:

  • Periodically inspect the grille for debris or obstructions.
  • Clean the exterior of the grille with a damp cloth and mild detergent if necessary. Avoid abrasive cleaners.
  • Check the anti-insect mesh for blockages and gently clean with a soft brush if required.

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