Will it fit?

Evening gents.
I've been offered the chance to buy a cheap videocard for my Shuttle SB81P,
however I'm not sure if it will actually fit into the machine.
The videocard in question is this one:
ASUS Extreme N6800LE/HTD
http://www.asus.com/products4.aspx?l...74&modelmenu=1

Can someone please verify that it will fit?

On the Shuttle website I can see that the max. lenght of a supported
videacard is 19 cm, but I cant google the length of the Asus card.

Cheers.