Dee Zee DZ8170WL Red Label Fifth Wheel Tool Box Non-Rusting 0.056 Brite-Tread Aluminum A Low Profile Lid For Increased Visibility Out The Rear Window Double V-Pan Lid Stiffener Creates Strength And Rigidity Internal Bends and 3-Piece Body Add Superior Strength Closed Cell Foam Gasket Helps Resist The Elements From Getting Inside The Box