You can use this model in your maps. This type generally used for Japanese style projects. Generally useful for FPS games optimized low poly.
Prepared from a two texture set ; (Base map and Glass alpha) and very optimized for map making.
Base Map 2048x2048pxNormal Map 2048x2048pxRoughness Map 2048x2048px
Glass alpha 32x32px
Poly 6.660 and Verts 4.989 * Plus blender file