Its the upgrade kit at the bottom-
http://members.aol.com/fantasticvent/upgrade_kits.htm
It's spendy, but I had the same problem.... even on low its was too much, so we never used the fan and as a result we got heavy condensation, etc... I tried not to think about the money as an incremental expense- more like the fan I had didn't work and this was a replacement! I got mine on eBay and then when I went to install it, it would run, but only on high. I called Fantastic (talked to Bob in tech service and he was AWESOME...sent me a whole replacement upgrade kit and asked me to send back the defective unit. He included a prepaid mailing voucher as well! The remote is great (i thought it was silly at first) mounted between our heads and we can adjust the flow during the night.
I was going to make a seperate post recommending the unit to everyone...what a difference!
