I forget what mod wanted a shop window, probably not one of my own, and possibly Shezrie's Towns. Anyhow, the main issue was that the windows of buildings were not transparent, so it was hard to display an item in a shop. The solution was to make a transparent shop window that could be added to the outside of the shop, instead.
I made three, in architectural styles to suit Cheydinhal, Chorrol, and Anvil, where bay windows were already used for the houses. The other cities didn't have anything comparable, and a bay window would have looked out of place. The interior has a box to elevate a single item, or to display tiered multiple pieces. Collision box extends to the ground under the window.
There are no other pictures, as I didn't use them in any of my games.
Mod as last uploaded to the Nexus.
The readme has not been updated, so references to the Nexus site are obsolete. This is now the only legitimate source.
Installing this in your game will do nothing, as there is no .esp to place the windows. It's just a resource for map-makers.