The Chevy Silverado and GMC Sierra 1999 through 2006 Aluminum Rear Cargo Rack is a practical and durable solution for transporting cargo. Its proprietary heptagonal formed tube construction and aluminum construction material ensure strength and longevity. The rack includes 4-inch vertical lumber stops, making it versatile for various cargo types. With weather resistance and compatibility with most Chevy Silverado and GMC Sierra models from 1999 to 2006, this cargo rack is a reliable and convenient addition to your truck.