EAG 11-14 GMC Sierra 2500HD / 3500HD Billet Grille Horizontal Polished Aluminum Not fit for Denali. Has been tested to have a perfect fit with the OEM grille, followed by extensive polishing. 6061 aircraft-grade aluminum. 4mm+8mm bar width. Never rust! Persist in looking amazing for years. Horizontal bar style. Overlay installation. All necessary hardware and instruction are included. Enables easy and quick installation.