The DART sconce from Lampatron is available in 2 colors (dark and light wood) and 4 sizes:

80x45 cm
80x60 cm
80x80 cm
80x100 cm

https://www.lampatron.ru/cat/item/design-lamps-dart/15149/#top2 

The materials are made in LegacyMtl, the model is lightweight and does not require smoothing.

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