Dee Zee DZ79 Brite-Tread Aluminum Topsider Tool Box Storage For The Top Rail Of The Truck Bed Lockable Stainless Steel T-Handle Latches Drop Down Doors For Easy Access (Safety Chains for Support) Water Resistant C-Channel And Bulb Seal To Help Keep The Elements Out L: 72" x W: 15.5" x H: 20" and Vol: 12.75 cu. ft.