Important Note: Will only fit Double Cab models, will NOT fit the larger Crew Cab (please see photo to confirm your truck's cab size) - Des Compatible with igned and built to fit your specific Double Cab, the Red Hound Auto 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; Includes 1 Under Seat Storage Box (dividers not included); Approximately 54-1/2" wide x 16-1/2" deep (custom designed to only fit Double Cab models); Compatible with Chevrolet/GMC: 2014-2018 Silverado and Sierra 1500 Double Cab and 2015-2018 Silverado and Sierra 2500HD/3500HD Double Cab; Important Note: please make sure you have a Double Cab model - the rear door should measure 30.5" wide; Tough high impact molded automotive grade black plastic; Reference: 23183670 22793547