Here is a collapsible pet ramp that makes it easier for your pets to reach your bed or sofa. The Carlson 39.5″ Collapsible Indoor Pet Ramp is height adjustable. It has non-slip carpet, rubber feet, and handles. The height of the lamp can be adjusted to 12, 16, 20 and 24 inches.
This pet ramp measures 39 x 16 x 24 inches. You can find out more about it here.