Shelves with decor.
The set includes shelves "Slim Floating Wall Shelves"
https://www.westelm.com/products/slim-floating-shelves-collection-d9263/?cm_src=WSIShopRVI&recstrat=RVI%7CRVI 

Modeling for smoothing: Turbosmooth modifier is present on all elements of the model - it is open, adjust the degree of smoothing at your discretion. In the preview, Turbosmooth iteration = 1.

Designed for close angles.

The renderers are made in Corona Render 9. Corona Legacy Mtl.
"For Corona Render: it is recommended to install a version not lower than 1.5, since the glossiness of the materials is configured with PBR in mind."