VK400 : Helios Fans VK 400
Helios / (VK400)
| Code & Description | Price | |
|---|---|---|
|
VK400 : Helios Fans VK 400
Note: £67.41 + VAT for new customers using 'WELCNFAN1' discount code!
|
£79.31 + VAT £95.17 | |
We accept : 
15% discount with code ‘welcnfan1’
Note: Code can only be used once per customer. Discount codes are entered after selecting shipping method.
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The Helios VK 400 is a flat overpressure shutter designed to enhance ventilation efficiency by preventing reverse airflow when the fan is switched off. It features automatic louvre operation that responds directly to fan activity, opening during operation and closing when the fan stops.
Suitable for airflow velocities of up to 8 m/s, this shutter ensures optimal air control without compromising performance. The number of louvres is size-dependent, ensuring balanced pressure relief across the system. Ideal for use in both residential and commercial ducting systems, the VK 400 is a reliable accessory for maintaining controlled and efficient airflow.