Dayton 4YY22

This item is a centrifugal upblast roof exhaust fan configured for roof curb mounting and vertical air discharge. It uses a belt-driven backward-inclined aluminum wheel housed in a spun aluminum enclosure. The unit is supplied without a motor or drive package and is intended for exhausting kitchen air within specified airflow, temperature, and static pressure limits. Key Features: Fan Type: Centrifugal upblast roof exhaust fan with backward-inclined wheel. Airflow Capacity: Airflow range specified from 8,631 to 18,611 cfm at 0.0 in static pressure. Drive Configuration: Belt drive design; motor and drive package not included. Wheel and Housing Materials: Aluminum wheel with spun aluminum housing. Operating Limits: Maximum static pressure specified at 1-3/4 in wc and maximum inlet air temperature up to 300°F. Speed Range: Fan speed range specified from 320 to 690 RPM. Bearings: Regreasable pillow block bearing configuration. Mounting: Roof curb mounting with a square base measuring 46 in x 46 in.