This mod will add to the game various types of windows that you can use to build buildings. Now you can choose the windows to your liking, they can be square or round.
Windows Mod for Minecraft 1.15.2/1.15.1/1.14.4
Create completely new buildings using this mod. Each window is unique in its own name, so you should definitely download this mod to your Minecraft.
1.15.2/1.15.1 – mcw_windows_1.0.0_mc1.15.1_1.15.2
1.14.4 – mcw_windows_1.0.0_mc1.14.4