RTA direct drive high pressure all aluminum rooftop centrifugal exhaust fa

Product feature:
Large volume, low noise, energy saving, high reliable design
CYCLONETM series axial propeller, light and high efficiency
Wheel balancing level G2.5
Patented "FLAG CLOUD" series design: automatically reduces snow & rain load
Direct drive, no easily damaged parts, no maintenance need
Multi-reinforced ribs: suitable for inland and coastal windy application