I put an Unturned II proportioned building into U3. It doesnt follow the standardized window frame sizes, but I thought it was worth trying out anyways. I’ve been working on a little art project with the UII style since development got paused.
The window inserts that fit inside the frame are 0.1m wide and are offset from the frame by 0.05m, and the frames are 0.35m wide with a thickness of 0.1m. The smaller windows on the upper floors have double hung window frames, and all the other windows are designed for a single pane of glass. I tried to follow the proportions given in that old screenshot of an Unturned 2 building released a long time ago as well as what’s offered on the wiki. (Building made using Craven’s UII blender tool)
Its kind of hard to tell in Eevee but this model has actual textures instead of solid colors. I used the wood log texture in the Unity packages and made other variants for different colors of wood and the fire place uses a variation of the example boulder textures. Wood ends use a variant of the end cap texture in the tree example file. So all textures are less than 64x64.