There are many similar products at home center. It may be slightly higher than those. I think the density of eyes is higher. I think the eye height is also the optimum height for cats. Those in the home center had an impression that their eyes were too high.
Since it is an open car without a roof m door, it is set as a nest of stray cats. Once the stray cat seemed to have stood on this, there was a slight blood under the item. Although it was effective, it is expensive so you can not arrange the necessary number.