The CURT SecureLatch channel is designed to mount a lunette ring onto your trailer and provide integrated height adjustment for level towing. It has an inside width of 2-3/4 inches and an overall height of 11-3/4 inches. This allows it to specifically fit the CURT SecureLatch lunette ring #48626 (sold separately). This lunette ring channel is constructed from austempered cast iron for superior strength and wear resistance. It is rated for a maximum gross trailer weight of 40,000 pounds. This channel also comes with a raw metal finish to be readily welded into place on your trailer.