Attic, Roof, & Whole House Fans

The Canarm ALX210DBT10150 is a 21-inch downblast belt drive exhauster designed to move large volumes of air from busy commercial spaces. Its spun aluminum construction and belt-driven design give you a dependable rooftop solution for factories, warehouses, and food service buildings that need consistent, code-compliant airflow. Built for single-phase, 115-volt power, this model integrates seamlessly with standard electrical service while supplying the airflow capacity required for optimal ventilation. Key Features and Benefits of the Canarm ALX210DBT10150 21-Inch Downblast Exhauster Spun-Aluminum Housing: The aluminum housing resists corrosion, so you avoid rust, chipping, and peeling in harsh environments. Backward-Inclined Wheel: The backward-inclined aluminum wheel is non-overloading, maintaining steady airflow across a wide static-pressure range and protecting the motor from excessive amp draw. Belt-Drive Design: Provides smooth, quiet operation. High Airflow Output: High airflow capacity from 4,852 CFM (at 0.0-inches w.g. static pressure) to 2,275 CFM (at 1.25-inches w.g. static pressure) offers ideal exhaust levels from factories, offices, warehouses, or commercial buildings. Tool-Free Maintenance: Quick-release latches provide fast access to belts and bearings, reducing maintenance time. Standard Bird Screen: The included screen blocks debris and wildlife from entering the fan, helping preserve internal components and airflow performance. Roof or Mall Mounting: This model can be roof or wall-mounted in a 29 inch opening. Engineered for Rooftops This exhauster is optimized for straightforward rooftop or wall placement with a 29-inch roof opening, 33.13-inch base width, and 36.25-inch height. Operating at 19.3 dB, the fan balances high airflow with manageable sound levels, an important consideration for mixed-use or multistory buildings. With an operating speed of 977 RPM, you achieve targeted airflow without excessive energy draw, and the one-inch shaft size s