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Impeller type


Fiberglass SW Airfoil Fan, BIA Impeller


Constructed for durability and resistance to most chemicals. All airstream parts are constructed of fiberglass reinforced plastic mounted on an all welded, heavy-gauge steel base. Features Twin City Fan & Blower’s FA9 impeller with backward inclined airfoil blades offering a power limiting characteristic, high operating efficiency and low noise levels.

Sizes (impeller diameters)

  • 12 to 39 inches (305 mm to 995 mm)


  • Airflow to 31,100 CFM (52,800 m3/hour)
    Static pressure to 13 inches w.g. (3,230 Pa)

Link to Video Library

  • How To Videos

    Inertia Base Installation, Rotor Removal & Installation, Sheave Installation, Unitary Base Installation, Impeller Removal & Installation, Piezometer Ring Installation