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Installation must be carried out by a qualified electrician.
Ensure power is switched off before installation.
Suitable for indoor use.
The Knightsbridge EX1TBK Extractor Fan is a modern, high-performance ventilation solution designed for quiet and efficient removal of damp air, odours, and airborne pollutants from bathrooms, toilets, and utility rooms. Featuring a sleek black finish and low noise operation at just 28.5dBA, this 4-inch (100mm) fan blends discreetly into any interior while maintaining powerful extraction of 24 litres per second. The integrated adjustable over-run timer (2-30 minutes) allows continued operation after the room is vacated, ensuring thorough moisture removal and compliance with modern Building Regulations (Part F & Part L). With IP45 ingress protection, double insulation, and a generous 3-year manufacturer warranty, the EX1TBK delivers reliable, energy-efficient performance for residential and light commercial applications.
Modern Black Finish: Sleek, contemporary design complements modern interiors.
Adjustable Over-Run Timer: 2-30 minute adjustable run-on timer (preset to 2 minutes) for effective post-occupancy moisture removal.
Low Noise Operation: Quiet 28.5dBA at 3m for discreet, unobtrusive operation.
Effective Extraction Rate: 24 litres per second airflow for efficient ventilation.
4 Inch (100mm) Diameter: Standard size suitable for wall or ceiling installation.
IP45 Rated: Protected against water jets, suitable for bathroom zones.
Double Insulated: No earth connection required for safe installation.
Building Regulations Compliant: Meets Part F (ventilation) and Part L (conservation of fuel and power) requirements.
Easy Installation: 102mm cut-out diameter for straightforward fitting.
Low Maintenance: Reliable operation with long service life.
3 Year Manufacturer Warranty: Comprehensive coverage for peace of mind.
Versatile Applications: Ideal for bathrooms, toilets, utility rooms, and kitchens.
| Specification | Details |
|---|---|
| Brand | Knightsbridge |
| Model | EX1TBK |
| Product Type | Extractor Fan with Over-Run Timer |
| Finish | Black |
| Fan Diameter | 100mm (4 Inch) |
| Extraction Rate | 24 l/s |
| Noise Level | 28.5dBA at 3m |
| Timer | Adjustable 2-30 minutes (preset 2 mins) |
| IP Rating | IP45 |
| Insulation | Double Insulated (Class II) |
| Cut-Out Diameter | 102mm |
| Dimensions | 157.6mm (H) x 157.6mm (W) x 127.2mm (D) |
| Voltage | 230V 50Hz |
| Compliance | Building Regulations Part F & Part L |
| Warranty | 3 Years |
| Applications | Bathrooms, toilets, utility rooms |
1. How does the adjustable over-run timer improve ventilation effectiveness?
The timer keeps the fan running for a preset period (2-30 minutes) after the light is switched off, continuing to extract moisture-laden air and preventing condensation and mould growth - particularly important in bathrooms without windows.
2. Is this fan suitable for installation directly above a shower or bath?
With IP45 rating, it is protected against water jets and suitable for use in bathroom zones where water exposure may occur. Always follow manufacturer instructions and IET wiring regulations for specific zone requirements.
3. What is the advantage of the low 28.5dBA noise level?
At just 28.5dBA, the fan operates quieter than a library (30dBA), ensuring it won't disturb relaxation in bathrooms or conversation in utility rooms while still providing effective ventilation.
4. Does this fan meet current UK Building Regulations?
Yes, it complies with Part F (means of ventilation) and Part L (conservation of fuel and power), making it suitable for new installations and replacements in regulated premises.
5. What is the recommended room size for this 24 l/s extraction rate?
24 l/s is suitable for small to medium bathrooms, ensuites, and utility rooms up to approximately 15-20m³. For larger spaces, multiple fans or higher capacity units may be required.
