For 99-06 Chevy/GMC - some Chevy/GMC 99-00 trucks will have the 88-98 body, use part # V-EL10 for the 88-98 body style. 5th wheel design makes trailer hook-ups easy. Louvered design improves rear vision, decreases wind resistance & increase fuel economy. It is textured black powder coated finish. It makes passing & backing up safer.