I have been looking for a dog ramp with very specific measurements for my small Yorkie. The ramp will enable him access the window for viewing the lawn. To no avail, no ramp was found ( in stores or internet). I decided to build the ramp myself with the very specific measurements which was honestly a custom request. I was surprised as the pieces of wood and screws transformed them selves into the ramp for my best canine friend. My wife complimented me for building a quality well built dog ramp. This was my first project, and definitely not my last.