This is a 14 Gauge Steel Diamond Plate Round Trailer Fender. This fender size, as long as it is installed at the proper location and height, will accommodate most trailer tire sizes from 13 inch to 15 inch trailer tires. This 14 Gauge Steel Round Style Trailer Fender has the advantage of strength and durability over some other types of fenders. As seen in the pictures, this fender measures 9 inches wide, 32 inches long, and 15 inches high from the ground to the top of the fender. As far as installation of this fender, there are many ways. Check the pictures and you will notice that one side of this Round Steel Trailer Fender is rounded, while the other side is flattened. The side that is flat is your weld on or bolt on surface. In addition, sometimes fender brackets are welded to the trailers frame on the front and back of the fenders location. Check the measurements in the images to ensure this is the proper trailer fender for your application.