Help with mesh

I’m having a problem getting the mesh to return solid. I’m not really sure what I did here that is preventing me to do so. I’ve tried several things in the object properties panel as well as the display setting for the 3D view.

Here is the file I’m working with : (425 KB)

Ok cool thanks for the info. I hadn’t even bothered checking with the face count.

Sorry about the title. I wasn’t too sure a longer title would have been better but I will be better descriptive next time.