Centrifugal Upblast Roof Exhaust Fan, Application Industrial and Commercial Buildings, Restaurants, Schools, Drive Type Direct Drive, For Air Type Kitchen Air, Base Diameter Not Applicable, Base Width 19 in, Base Length 19 in, Base Shape Square, Maximum Static Pressure 1 1/2 in wc, Exhaust Airflow @ 0.000 in SP 2,037 cfm, Nameplate Voltage 115V AC, Phase 1, Motor Horsepower 1/2 hp, Assembly Assembled, Number of Speeds Variable, Housing Material Aluminum, Wheel Material Aluminum