S&P CRHT/4-400 400mm Roof-Mounted Ventilation Fan

The S&P CRHT/4-400 400 mm Roof-Mounted Ventilation Fan is a powerful centrifugal extraction fan designed for efficient roof ventilation in commercial and industrial HVAC systems. It features a low-profile horizontal discharge design that allows high airflow performance while minimizing roof installation height. The fan uses a high-efficiency backward-curved centrifugal impeller combined with a three-phase external rotor motor to deliver reliable airflow and energy-efficient operation. Built with a galvanised steel base and spun aluminium weather cowl, the unit is engineered for long-lasting durability and protection against outdoor environmental conditions.

Material & Construction

• Base: Heavy-duty galvanised sheet steel for strength and corrosion resistance.

• Cowl: Spun aluminium weather hood designed for outdoor roof installation.

• Impeller: Backward-curved centrifugal impeller for efficient airflow performance.

• Motor: External rotor three-phase AC motor with built-in thermal protection.

• Guard: Steel finger-proof safety guard to prevent debris entry.

Specifications

• Product Type: Centrifugal Roof-Mounted Ventilation Fan

• Model: CRHT/4-400

• Fan Diameter: 400 mm

• Airflow Capacity: Up to ≈4,156 m³/h

• Static Pressure: Approx. 108 Pa

• Motor Type: External rotor three-phase AC motor

• Voltage: 230/400 V – 50/60 Hz

• Speed: Approx. 1379 RPM

• Power Input: Approx. 0.426 kW