You're best bet is to contact Gaggenau to get the latest one delivered, as they often change the sizing slightly, you also want to check the clearances.
Hi Karen,
I see Gaggenau have the installation instructions available here:
http://www.gaggenau.com/ca/en/product/VP414?sourceCat=cooking#downloads
They also have the user manuals available from the Gaggenau site.
They're website I'd say is your best bet :)
http://www.gaggenau.com/ca/en/product/VP414?sourceCat=cooking#downloads