Important Note: Will only fit full Crew Cab models, will NOT fit the smaller Double Cab (please see last photo to confirm your trucks cab size) - Des Fits igned and built to fit your specific Crew Cab, the underseat storage system is the perfect storage solution for sportsmen, contractors, or anyone else who just wants to store gear safely and out of sight. Custom engineered to fit perfectly under the Crew Cab's rear seat, this sleek and rugged molded storage space provides a large capacity for reducing clutter and storing gear, tools, guns, fishing equipment, towing accessories, first aid supplies, tie downs, jumper cables, boots, gloves, hats and anything else you want to keep concealed and organized. Installs easily and quickly with provided hardware.; Includes 1 Under Seat Storage Box (with installation kit, dividers not included); Approximately 54-1/2" wide x 16-1/4" deep (custom designed to only fit Crew Cab models); Molded Under Seat Rear Storage Box Fits Silverado/Sierra Crew Cab; Perfect solution for keeping your valuables stored away and out of sight; Great for tools, sports gear, winter accessories, hunting and fishing equipment and more; Review Fitment carefully: Full Crew Cab Models Only! Fits Chevrolet/GMC Silverado & Sierra CREW CAB: 2007 New Body, 2008-2018, 2019 Classic (will not fit 2019 new body style); IMPORTANT NOTE FOR 2014+ Model years: please make sure you have a Crew Cab - for 2014+ Crew Cabs the rear door should measure 40" wide (review last photo to verify you do not have the smaller rear doors that this item will NOT fit). Tough high impact molded automotive grade black plastic; Reference: 23183674 22793542 17803488