Check out 3D WALLPANEL 600MM x 600MM Free 3D model on CGTrader for free. High-quality mesh by ananthmaran.
STL (Stereolithography, filesize: 278 MB), OBJ (OBJ, filesize: 137 MB), WRL (VRML, filesize: 257 MB), C4D (Cinema 4D, filesize: 76.2 MB), MA (Autodesk Maya, filesize: 246 MB), S3D (Strata 3D, filesize: 141 MB), ZTL (Zbrush, filesize: 132 MB)