What is the overall height of the mount?

I plan on installing the mount in the Pilot House of a boat. The windows of the Pilot House slope inward so in order to clear the windows I need to know the height of the mount. In addition does the top of an iMac 27 or a Thunderbolt display extend above the top of the mount and if so by how much?

Bretford MobilePro Desk Mount Combo

Bretford MobilePro Desk Mount Combo

Product No Longer Available

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