Custom printed panels are non-returnable.
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Recommended image size:• 600 × 600 pixels or higher resolutionAccepted file formats:• JPG• PNG• PDF
Availability: 345 in stock
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Once you receive your order confirmation email, your order will be processed within 2–3 business days (excluding weekends and public holidays).
Installation must be carried out by a qualified electrician.
Ensure power is switched off before installation.
Suitable for indoor use.
This 4-inch gravity shutter offers a practical and tidy solution for terminating ventilation ducting through external or internal walls. Designed specifically for use with 100mm extractor fans, it provides a clean, professional finish to wall openings while serving a crucial protective function. The gravity-operated louvres open automatically when the fan is in use, allowing moist or stale air to exit freely, and close securely when the fan stops, creating an effective seal against the outside environment.
Constructed for durability and reliable performance, this shutter is compatible with both rigid and flexible 100mm round ducting, making it a versatile choice for a variety of installations. Whether fitted in a bathroom, kitchen, or utility area, it helps maintain indoor comfort by preventing cold backdraughts and rain penetration. Additionally, the closed louvres act as a barrier against insects, rodents, and other vermin, ensuring your ventilation system remains clean and unobstructed when not in operation.
Gravity-Operated Louvres: Open automatically with fan operation and close securely when not in use.
Backdraught Prevention: Stops cold air and draughts from entering through the ventilation opening.
Weather Protection: Designed to resist rain penetration when the shutter is in the closed position.
Vermin Barrier: Closed louvres prevent insects, rodents, and other pests from entering via ducting.
Wide Compatibility: Suitable for use with 4 inch/100mm extractor fans and round rigid or flexible ducting.
Durable Black Finish: Robust construction with a neutral black colour that blends with most exterior and interior surfaces.
Peace of Mind: Backed by a 1-year warranty.
| Specification | Details |
|---|---|
| Size | 100mm (4 inches) |
| Compatibility | 4 inch / 100mm extractor fans |
| Ducting Compatibility | 100mm round rigid or flexible ducting |
| Colour | Black |
| Operation | Gravity shutter (passive louvres) |
| Warranty | 1 Year |
| Model | VENTGRILL |
| Weight | 0.20kg |
1. How does a gravity shutter work?
The louvres are opened by the force of air from the extractor fan when it is running. Once the fan stops, the louvres close by gravity, sealing the opening.
2. Can this shutter be used on an external wall?
Yes, it is specifically designed for installation through external or internal walls and provides protection against rain penetration and backdraughts.
3. Will this fit my existing 100mm ducting?
The shutter is designed to connect to standard 100mm round rigid or flexible ducting, making it compatible with most 4-inch ventilation systems.
4. Does this shutter include a fly screen?
While the gravity louvres themselves act as a physical barrier to large insects and vermin when closed, this model does not include a separate fine mesh fly screen.
5. Is the shutter suitable for use in a bathroom?
Yes, it is ideal for bathroom extractor fan installations where preventing cold draughts and maintaining energy efficiency is important.
