The Corona version is 8 (Corona Legacy Material).
The model uses materials that may not be displayed correctly in very old versions of the engine.
For proper operation, make sure that the units of measurement in the scene are in mm:
Customize - Units setup - System unit setup - mm
The carpet material is made using the Displacement card (make sure that Displacement is enabled in your scene settings).
Suitable for long-range and medium-range camera angles.

5 carpet sizes in the scene:

- 160*230 cm.
- 200*300 cm.
- 250*350 cm.
- 300*400 cm.
- 350*350 cm.

https://www.rodwellandastor.com.au/products/nebraska-floor-rug-natural-white?variant=14781957701741 
https://estliving.com/product/baya-nebraska-floor-rug-natural-white/ 
https://www.inkandbrayer.co.nz/products/baya-nebraska-handwoven-textured-rug 

More carpets: http://3dsky.org/collection/shared/5321350