The invisible parts of the duct, hood and grate are modeled schematically and approximately, because the manufacturer's drawings are not entirely reliable. You should not rely on my model for designing a kitchen cabinet cabinet.

Qualitative model of ceramic induction hob Smeg HOBD482D. The model is assembled into one object and has a multimaterial. V-Ray materials, there are several textures. Objects, textures and materials have been renamed.

There are no materials in the OBJ file, only geometry.

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.