This is a gothic window design that was made in blender, the render was done with cycles and an hdri, the design can be subdivided for any level of detail. I hope you like it and that it is of use to you and your project.
STL (Stereolithography, filesize: 145 MB), OBJ (OBJ, filesize: 226 MB), BLEND (Blender, filesize: 19.2 MB), FBX (Autodesk FBX, filesize: 78.2 MB)