3d model: mechanical equipment under ceiling contains canals , wire , .... parts are separated and they are in different groups for easier work and editable .
modeling in 3dmax 2018 and save as in max 2015 version Materials: Black metal. silver metal and concrete roof and mesh false ceiling. All items are UVW mapped. Max 2015 - vray6 Max 2015 - corona 6 obj , fbx polys :600987 verts:612621 Those who work in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whatever suits you best.