* Is it a vaulted or angled ceiling...or maybe a coffered ceiling?
    * What is the actual room size?
    * what is the overall open area (including connected open rooms)?
    * Where will the fan be position relative to the to the living space/furnishings?
    * What is the function of the room?
    * What is your local climate?
    * Do you want the fan for heat reclamation, cooling or both?
    * How much airflow does the fan you are considering provide?
    * What finish will look best hanging down in your room?
    * Do you need the fan for direct or indirect lighting?
    * What length downrod will make the fan look the best?
    * What length downrods are available for the fan you like?
    * Is there a downrod coupler available if needed?