The model was created in the 2014 version and saved in the earlier 2011.
There is also an OBJ format.
There are no third-party plugins, all elements are named after their own names.
For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is adjusted for PBR
Dimensions; (Diameter × Height)
S Ø 53 × 5 cm
Lamp Ø 30 cm
M Ø 63 × 5 cm
Lamp Ø 40
Link to the site https://www.lampatron.ru/cat/item/design-lamps-gerdis/