Blauberg Plastic Gravity Shutter Grille - 100mm - Brown

This 4-inch/100mm plastic ducting air inlet/outlet features gravity shutters and a round male spig...

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eBayExtractor Fan Vent Cover Brown Wall Grille with Gravity Shutters for 100mm Duct
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B&QB&Q - Plastic Gravity Shutter Grille With Round Read Spigot100mmBrown
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Product Information

Full details

The Blauberg Plastic Gravity Shutter Grille is an essential component for homeowners and contractors looking to effectively terminate bathroom, kitchen, or HVAC ducting to an exterior wall. Its primary benefit is the gravity-operated shutter system that prevents backdraughts, pests, and exterior odours from entering the building when the fan is inactive; however, it requires a vertical installation to ensure the shutters close properly under their own weight.

All features

ColourBrown
Model Part NumberDECOR155X155-100GBROWN
BrandBlauberg

Extended Product Information

FAQs

Can this be used on a ceiling?

No, this grille relies on gravity to close the shutters. It must be installed on a vertical wall.

Does this require any electrical wiring?

No, this is a passive ventilation component and has no electrical parts.

Will this fit flexible aluminium ducting?

Yes, it is compatible with standard 100mm flexible, semi-rigid, and rigid plastic ducting.

Is the brown colour paintable?

Yes, you can use a plastic-compatible spray paint if you need to match the grille to a different wall colour.

Does it come with mounting screws?

Mounting hardware is typically not included as the required fixings depend on your specific wall material (brick, wood, or render).

Can I use this for tumble dryer venting?

It is not recommended for tumble dryers as lint can build up and prevent the gravity shutters from closing properly.

Troubleshooting

Shutters stay open when the fan is off

Ensure the grille is mounted perfectly vertical; if the frame is tilted, the shutters may stick.

Shutters make a rattling noise in high winds

This is common with gravity flaps; ensure the unit is mounted flush against the wall and consider adding a thin foam gasket between the frame and the wall to dampen vibrations.

Difficult to push into the ducting

Apply a small amount of silicone lubricant to the spigot or ensure the duct end is perfectly round and free of obstructions.

Pros and Cons

Pros

  • Reliable gravity shutter mechanism requires no maintenance or springs
  • Easy push-fit installation compatible with standard 100mm ducting
  • Prevents unwanted backdraughts and external odours
  • Suitable for both domestic and light commercial ventilation setups
  • Weather-resistant construction ensures outdoor durability

Cons

  • Must be mounted vertically for gravity shutters to function correctly
  • Plastic material may be susceptible to cracking if struck by heavy impacts
  • No insect mesh included in this specific configuration

Setup, Compatibility & Care

Installation is achieved via a simple push-fit mechanism. Ensure the 100mm round male spigot is inserted fully into your existing duct run. It is crucial to mount the unit on a vertical exterior wall surface; mounting it horizontally or on an incline will prevent the shutters from closing via gravity. For added security and weatherproofing, apply a bead of silicone sealant around the edges of the square frame where it meets the building wall. To clean, remove any accumulated dust or debris from the shutter flaps annually using a soft brush or a damp cloth to ensure the flaps can swing freely.

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