For proper operation, check 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).
5 carpet sizes in the scene:
-120*170 cm.
-140*200 cm.
-160*230 cm.
-200*290 cm.
- 240*320 cm.

https://www.benuta.eu/rug-eve-cream-beige-60007172-130101.html?url_key=rug-eve-cream-beige-60007172-130101 

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