Replace your motor mount assembly with this bracket to perfectly seat the belt-drive motor and the accompanying pulley which attaches to the motor shaft. Part XXWHPULLEY6 comes with the pulley and bracket together. XXCASTPULLEY6 is only the pulley.
This pulley is compatible with Cool Attic belt-driven whole house fan models.
This item should be purchased only if your whole house fan was purchased BEFORE July 22, 2013.