They do have downrods available for the purpose you desire...in various lengths and finishes. I'm guessing you are saying that you already have a flush mount already installed?? If so, you may or may not be able to extend it. Depends on if it can accept a downrod, both at the motor unit and the ceiling bracket, and whether the motor unit has an area designed for making and containing wire connections, as you would most likely have to add wire for the length of the new rod. Depends on the length of the wires and the rod. Not always, but many times a true 'ceiling hugger' doesn't use the necessary parts for 'downrodding' or they get thrown away after original installation. You may end up having to get a new fan that is capable of being extended. The minimum length of the downrod will depend on the slope of the ceiling and the length of the blades so you can get a rod that will drop it down far enough for the blades to clear the ceiling. Also, in general you don't want it closer than 7 ft to the floor, so be careful of that. I know, I know...I don't know anybody that is 7 ft tall either. If you do take the old fan down at some point, look inside the box to see if it's stamped ceiling fan rated. Should be a metal box and stamped. Just my 2 cents.