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Products
Helios (2146)
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Helios Fans VK 100/50
The Helios VK 100/50 is a compact, flat overpressure shutter designed for automatic operation in 100mm duct systems. It opens when the fan is active and closes automatically when the fan stops, ensuring efficient airflow control and backdraft prevention. Capable of handling airflow speeds up to 8 m/s, this shutter helps maintain energy efficiency a ...
Helios Fans VK 125
The Helios VK 125 is a reliable automatic overpressure shutter designed for external air outlets with a 125mm diameter. Built with a conical spigot for simple plug-in installation and a foam sealing strip for added tightness, this unit ensures quick and secure mounting. The frame and louvres are made from UV-resistant, break-resistant white plastic ...
Helios Fans VK 160
The Helios VK 160 overpressure shutter is designed for flat installation at external air outlets with a 160mm connection size. Featuring automatic operation, the shutter opens when the fan is in use and closes when the system is off, providing effective protection against backdrafts, debris, and pests. With a maximum airflow velocity capacity of 8 ...
Helios Fans VK 200
The Helios VK 200 is a flat-profile overpressure shutter designed for efficient closure of 200mm air outlets. It operates automatically, opening when the fan is active and closing when the system is off, helping to prevent air backflow and intrusion of debris or insects. Engineered for performance, it supports airflows up to 8 m/s. The number of lo ...
Helios Fans VK 250
The Helios VK 250 is a flat-style overpressure shutter engineered for 250mm diameter air outlets. Designed to automatically open when the fan starts and close when it stops, this shutter effectively prevents backdrafts and environmental ingress such as dust or insects. It supports a maximum airflow velocity of 8 m/s, making it suitable for a wide r ...
Helios Fans VK 30/15
The Helios VK 30/15 is a compact, flat-style overpressure shutter designed for automatic control of air outlets. It opens and closes in sync with the fan operation — opening when the fan is active and closing when it stops — helping to prevent unwanted air return and maintain system efficiency. Capable of handling airflow velocities up to 8 m/s, this s ...
Helios Fans VK 315
The Helios VK 315 is a flat-design overpressure shutter engineered to regulate airflow at 315mm air outlets. It automatically opens when the fan is running and closes when the fan is off, helping to prevent backdrafts, dust ingress, and unwanted air exchange. Built for airflow velocities up to 8 m/s, this shutter ensures reliable performance in res ...
Helios Fans VK 355
The Helios VK 355 is a flat-design overpressure shutter designed for 355mm air outlets, offering automatic opening and closing in sync with the operation of the connected fan. This mechanism prevents backdrafts and protects against dust and outdoor air entering the system when the fan is off. Capable of handling airflow speeds up to 8 m/s, the VK 3 ...
Helios Fans VK 40/20
The Helios VK 40/20 is a compact, flat-design overpressure shutter built for ventilation systems with 400×200 mm air outlets. Designed to automatically open and close with the fan’s operation, it effectively prevents reverse airflow and improves system efficiency. Capable of handling airflow speeds up to 8 m/s, the VK 40/20 ensures reliable air man ...
Helios Fans VK 400
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 e ...