Ventamatic Superior Energy Efficient Galvanized Gable Mount Attic Vent

1650 CFM (cubic feet per minute) superior energy efficient gable mount attic exhaust ventilator. Galvanized steel construction. Suitable for 2500 sq. ft. (square foot) attic. 2.1A (ampere) energy efficient thermally protected PSC (Permanent Split Capacitor) motor. Includes 10A adjustable thermostat. 14" fan blade. Engineered mounting system virtually eliminates vibration and ensures quiet operation. Precision balanced fan blades for minimum vibration and no heat distortion. 4 fan blades for greater air movement. This fan requires minimum 600 sq in (square inch) net free area intake vent area. Completely pre-assembled for easy installation, no special tools required. Easy installation behind static gable louvers or the model No. CX2121-Automatic Gable Shutter. Lifetime limited warranty on all parts.