Here is a view of the sculptured valley flat (thinner) grid on a quote from Milgard.

Hi! We have the sculptured grid on the Tuscany windows and a slider, and the grids are on the outside of the glass on both the interior and exterior. We love the look of them and feel like it was worth the extra cost.

Hello there! You can view the grid options on our website here: https://www.milgard.com/windows/tuscany-series/tuscany-series-single-hung-window 

Just click the "grids" tab, and you can toggle between the different options. I hope this helps!