This is a Cold Rolled Steel Tandem Axle Trailer Fender with a Tear Drop in the Center. This Style of Fender is very common on enclosed trailers, equipment trailers, and cargo trailers. Typically this fender would be welded to the frame of the trailer, or mounted with hardware (not included). These fenders are raw steel, so they would typically be painted after installation to further prevent weathering. This Fender measures 9 inches Wide x 72 inches Long x 20 1/2 inches tall. You will see from the product photos that this fender has one radius side, which would be the outer side, and one 90 Degree bend side, which would be the side that mounts to the trailer.