Thanks for the question. Yes it is in the Twin Cities. We can check with the project General Contractor for who did the fabrication if you wish. However, we have done this window trick a few times and it has been fabricated successfully by different installers. It is all standard shower glass hardware. Note, it's hard to see it in the image but the window sill is marble and slopes ever so slightly away from the window. Also, the frosted glass door has a silicone door sweep along the bottom to keep water from splashing under the glass.

You can see an image of the door closed on our web site here: Shelter Architecture

Hopefully that helps!