Kristal Klear it is!! One thing about this product though is that its ALWAYS thicker at the edges than at the middle, so it gives a "concave" look to the window. After the Kristal Klear has dried, merely take a drop of clear gloss finish, either acrylic or even Glosscoat will work if not too thick, and place into the window. Make sure the model is lying flat and when dry the "glass" now appears to have a flat, smooth surface.