The HELI VDW 315/4 roof fan is a vertically discharging ventilation fan designed for efficient air circulation in various applications. With a seawater-resistant aluminum housing and a newly developed high-performance radial impeller, this fan offers high efficiency and durability. The construction includes a motor mounting plate and base plate made of galvanized steel, allowing for easy installation and integration of suction-side accessories. The fan is equipped with a speed-controllable single-phase external rotor motor that operates in a closed design with an IP 54 protection class. This ensures reliable performance under various conditions. The HELI VDW 315/4 is also maintenance-free and interference-free, making it a practical choice for long-term applications.

• Efficiency-optimized aluminum housing for high efficiency
• High-performance radial impeller with backward-curved blades
• Speed-controllable external rotor motor for flexible application
• Integrated protective measures and safety grille according to DIN EN ISO 13857
• Maintenance-free and interference-free operation with IP 65 service switch.