Need how-to for lift up rear galley door

I had planned on building a barn door for the galley, but am now going for a lift up, using a hurricane hinge from Grant Whipp. What a guy!
Here's my question; does the hatch go between the sidewalls or does it actually cover the side walls? Hopefully that makes sense. My side walls are 1/2" ply and are built out to 1 7/8" on the inside.
I'm trying to figure out what configuration will keep my galley driest. Hopefully my question makes sense. Thanks in advance.
Here's my question; does the hatch go between the sidewalls or does it actually cover the side walls? Hopefully that makes sense. My side walls are 1/2" ply and are built out to 1 7/8" on the inside.
I'm trying to figure out what configuration will keep my galley driest. Hopefully my question makes sense. Thanks in advance.