Preview renderings were made in Corona Render 8. On the Corona Legacy Mtl.

Objects are logically arranged materials and textures have logical names. The model is made with one smoothing iteration. In the fbx and obj archive

There are 4 sizes of heated towel rails in the scene:
1000×500 mm
1000×600 mm
1200×500 mm
1200×600 mm

For Corona render it is recommended to install version no lower than 1.5 since the glossiness of the materials is adjusted taking into account PBR

https://bathroomvillage.com/products/vogue-concertina-wall-mounted-heated-towel-rail?pr_prod_stratuse_description&pr_rec_idc53f7c138&pr_rec_pid1655341056052&pr_ref_pid1655346233396&pr_sequniform&variant14706171904052