Windsor - The Hour - Bottom Bracket Dimensions
In http://www.bikesdirect.com/products/windsor/thehour.htm it says:

Sealed Cartridge 103mm


Trying to find shell widths for 103mm sealed cartridges only gives 68mm as the only possible combo for 103mm the length. e.g http://sheldonbrown.com/harris/bottombrackets.html

So it should be 68m x 103mm.