VCN Range

Vents VCN Series: Compact exhaust fans with radial impeller


Powerful centrifugal fans for exterior walls in five nominal sizes: Ø 100 mm, Ø 125 mm, Ø 150 mm, Ø 160 mm, Ø 200 mm


If your ventilation setup needs to overcome duct resistance and still deliver consistent extraction, centrifugal fan technology is the smart choice. This category includes steel-cased centrifugal extractor fans with airflow up to 710 m³/h, suitable for removing stale air and warm air up to +55°C. Centrifugal fans are particularly effective where duct runs include bends, longer lengths or structural constraints that can reduce performance in conventional systems.

The key performance factor is the centrifugal impeller with backward-curved blades. This blade design is known for efficient pressure generation and stable airflow, helping the fan maintain performance where resistance is higher. Each impeller is dynamically balanced during production, supporting accurate technical performance and smoother operation with reduced vibration - important for reliability and comfort.


The fan is driven by a single-phase external rotor motor, built for robust everyday operation. Safety is supported by an integrated overheat protection feature with automatic reset. Ball bearings provide a long service life, designed for around 40,000 operating hours. Together, balanced impeller design, bearing quality and thermal protection create a dependable system for continuous or frequent use in both homes and workplaces.

Many installations benefit from adjustable airflow. That's why optional speed control is available, either continuous or stepped, via a thyristor controller or transformer speed controller. This makes it possible to match extraction to demand, reduce noise levels and improve energy efficiency while keeping pressure capability available when needed. If multiple fans are connected to one controller, always ensure the controller is correctly sized for total current draw.


The housing is engineered for durability as well: a powder-coated steel casing helps protect the motor against water ingress in outdoor conditions. A protective grille helps prevent intrusion by birds and rodents. Installation is carried out on the external wall with connection to round ducting. Available nominal diameters include 100, 125, 150, 160 and 200 mm, making it straightforward to integrate into common ductwork. Electrical supply is via external motor terminals. In short, these centrifugal extractor fans are made for users who need pressure performance, reliability and outdoor-grade protection in one solution.