This is an odd question...
An AC552AL is a 52" Hampton Bay, Landmark, 3 speed Ceiling Fan (with forward & reverse switch) that dangles down on a metal rod - made in China & sold in US - see...
http://www.vintageceilingfans.com/hamptonbay5bladelandmarkceilingfanmodelac-552.html
In the picture the rod looks to be about 20mm - 25mm diameter and if I had one I would measure it to be sure and if I didn't have one I would not need to know the rod diameter but....
If I search on Google for "hampton bay" + ac552al I get 2020 hits and surprisingly most of them (98%) are associated with internet porn and find this very strange.
Peccavi, December 2008
