Dee Zee DZ70 Brite-Tread Aluminum Topsider Tool Box Storage For The Top Rail Of The Truck Bed Lockable Stainless Steel T-Handle Latch Drop Down Doors For Easy Access (Safety Chains for Support) Water Resistant C-Channel And Bulb Seal To Help Keep The Elements Out L: 48" x W: 12" x H: 16" and Vol: 5.33 cu. ft.