For the outside lip it is 5' long and 24" wide. The lip is approximately 2" wide.
You get four in a set.
the external runners are exactly the same width as the sled runners and about 1/2 inch thick. the end result is exactly as shown in the photo. they work really well and protect the sled as i installed them about 10 years ago and still going stong
You can attach them too that sled. They come with the hardware.