Roof exhaust fans utilize die-cast axial flow impellers, built-in high-temperature motors (equipped with a dedicated motor cooling system), rainproof cowls, and water dam bases, designed for roof-mounted fire exhaust and ventilation applications.

The HTF(A)-W series roof exhaust fans utilize die-cast axial flow impellers, built-in high-temperature motors (equipped with a special motor cooling system), rainproof cowls, and water dam bases. They offer excellent high-temperature resistance, high efficiency, compact size, and easy installation. Optional dual-speed motors allow for dual-purpose use (i.e., normal ventilation and high-temperature smoke exhaust during fire emergencies). With the addition of an electric control box, remote automatic control is possible. According to the GA211-1999 fire fan high-temperature resistance test method, they can operate continuously for over 100 minutes at temperatures above 400°C and 20 hours per cycle at a medium temperature of 100°C without damage, having been recognized by fire departments in all provinces and cities across the country for use in roof-mounted fire smoke exhaust ventilation systems.

HTF (A)-W Series Fan Unique Product Structure: Gas conveyance is not in direct contact with the motor, and a dedicated motor cooling system is installed. Suitable for roof fans with temperature, humidity, and corrosion resistance, used for roof ventilation in high-temperature and high-humidity industrial environments such as power, oil, chemicals, metallurgy, etc.