Based on the feedback, the model needs to make the following corrections to the 3D object:

1. Modify the shape of the object to be a rectangular prism. This means the object should have six faces, all of which are rectangles. 

2. Ensure that all faces of the object are rectangles. This can be achieved by adjusting the vertices of the object such that each face forms a rectangle.

3. Provide a clearer view or additional angles that distinctly show all sides of the object to confirm that there are exactly six faces. This can be done by rotating the object or changing the camera angle in the 3D modeling software.