The CSBW's running surface is approx. five inches wide. The diameter is 10.5 inches. The CSBW has four height settings to choose from, on the lowest available height setting the wheel is approximately 11.5 inches tall and on the tallest available setting the wheel is approx. 12.5 inches tall. The stand is approx. 14.5 inches wide and the litter pan is 9x12. The CSBW comes with an extra set of bearings and zip ties should you ever need to replace them.