Attic, Roof, & Whole House Fans
The Canarm ALX210-DD100EC 21-inch Spun Aluminum Direct Drive 1 HP EC Motor Downblast Exhauster is a reliable solution for exhausting stale, warm, or contaminated air from commercial and industrial spaces. Built for roof tops or wall mounting, it pairs rugged construction with an electronically commutated motor to keep air moving efficiently across warehouses, factories, and office buildings. Engineered around a direct drive design, this downblast ventilator delivers consistent performance without belts to adjust or replace. You gain variable speed control, impressive airflow, and durable aluminum components that stand up to demanding environments. Key Features and Benefits of the Canarm ALX210-DD100EC 21-Inch EC Motor Downblast Exhauster Energy-Saving EC Motor: Reduce operating costs with a one-horsepower electronically commutated motor that reaches up to 82 percent efficiency and cuts energy use by as much as 70 percent compared with traditional PSC motors. Variable Speed Control: Adjust airflow from 425 to 900 RPM for precise ventilation that matches changing indoor conditions. Can be controlled remotely up to 50’ using a remote mount potentiometer or 0-10V. High Airflow: Move up to 4,400 cubic feet per minute at 0.0 inches w.g. static pressure, ensuring rapid air exchange for large, open areas. Direct Drive System: Eliminates belts, pulleys, and routine tension adjustments, lowering maintenance requirements over the life of the product. Durable Housing: The spun aluminum housing is a lightweight, corrosion-resistant construction that resists rust, chipping, or peeling, even in harsh outdoor settings. Non-Overloading Design: The backward-inclined aluminum wheel maintains stable energy draw across the speed range, protecting the motor during variable static pressure conditions. On-Board Speed Adjustment: Use the built-in potentiometer and LED display for quick setup, or connect a 0–10 volt controller or remote potentiometer up to 50 feet away for convenient, ground