Thickness of rear compartment door for combi-cam lock?

I want to add a combi-cam lock to the rear compartment of my 2720, but am not where I can measure the thickness of the compartment's door. Does anyone know how thick it is or would be willing to measure their's? Thanks.
Here are the choices-

For Material Thickness:
5/8" cylinders fit up to 3/8" material
7/8" cylinders fit up to 5/8" material
1-1/8" cylinders fit up to 7/8" material
1-3/8" cylinders fit up to 1-1/8" material