Paraview not displaying model as a solid

Hi Guys

Please refer to the attached file. It should be a solid cube however when rendering in Paraview it basically only shows a wireframe. How can I render it as a solid?

model_0.vtu (35.9 KB)
model_1.vtu (77.5 KB)
model_2.vtu (65.3 KB)
model_3.vtu (23.5 KB)

change representation type to surface

That just presents the nodes for the cube, please refer below.
Have you managed to open my files as a solid?

I found the solution, if I open an individual .vtu file it opens correctly.