Change Framed Wall Art by Dan Hobday
https://www.westelm.com/products/change-wall-art-by-dan-hobday-w4477/?pkey=call-art-photography 

The file contains 2 panel sizes:
812 mm x 812 mm x 50 mm
1015 mm x 1015 mm x 50 mm

Objects are satattached. The model, textures and materials are named logically and in accordance with the objects.
UVW mapping is done on objects.

polys: 1,046
verts: 1,088

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