The HELI RRK 250 radial duct fan from Helios is a powerful ventilation fan specifically designed for direct installation in duct systems. With a housing made of impact-resistant plastic and round connection flanges compatible with standard ducts, this fan offers a robust and durable solution for various ventilation applications. The high-performance radial impeller with backward-curved blades ensures an efficient air flow of up to 999 m³/h. The fan is equipped with a maintenance-free, low-noise external rotor motor, which guarantees a long service life due to its enclosed design and sealed ball bearings. The dynamic balancing according to quality grade G 6.3 ensures vibration-free operation, minimizing noise development and increasing efficiency. Therefore, the HELI RRK 250 is an ideal choice for applications that require reliable and effective air circulation.

• High-performance radial impeller with backward-curved blades for efficient air flow
• Vibration-free operation through dynamic balancing according to quality grade G 6.3
• Maintenance-free external rotor motor with low-noise ball bearings
• Robust housing made of impact-resistant plastic for durability.