The best way to establish these details is to refer to the manufacturer’s label on the rug backing. Rugs do come in some standard sizes, such as 4ft by 6ft, 5ft by 7ft, 6ft by 9ft, 7ft by 10ft etc., but the material of the fiber can vary.
Providing this information to your rug cleaner is important to determine the cleaning method and eventual cost of cleaning.