Lid Hinge Depth Question

I can't seem to find what the depth off of the back of the WSM the Unknown BBQ lid hinge sticks out when installed. Can someone provide me with that measurement, please? I'm in the process of designing a table/cart to mount my pair of 22.5's and also gathering all my modification accessories (a pair of lid hinges being the first purchase),

Thanks.

It protrudes 2" outside edge.