Premium Quality Oriented: Premium heavy duty Molded Under Seat Storage Box for Silverado/Sierra Crew Cab, designed tough and made from the highest quality materials. Features: The underseat storage box is made of tough high impact molded automotive grade black plastic, solid and durable. Great for tools, sports gear, winter accessories, hunting and fishing equipment and more. Fitment: The underseat storage box compatible with 2007-2018 Silverado / 2007-2019 Sierra 1500 / 2500HD / 3500HD Crew Cab. Replacement for #23183674. Will NOT compatible with 2019 Silverado Package Included: 1 under seat storage box, 2 nets and installation kit. Note: Dividers are not included. Size/Dimensions: Approximately 54-1/2" wide x 16-1/4" deep. Direct Replacement: Installation is very convenient and does not require you to make any modifications, drilling or cutting. Professional installation is always highly recommended.