Will NOT fit with Trail Special Edition Bed Storage BoxesNOTE: Will fit with or without Deck Rail SystemDrive With Cover In Closed/Folded Or Flipped Up Position, Weight Rated Up To 300lbs Of Evenly Distributed Weight, EPDM Outer Rail Seals For Maximum Water Resistance, Automatic Latching System/Locks With Tailgate, Fiberglass Reinforced Polymer Panel Top Skin, Patented Rail Design w/Load-Bearing Flange, UV Resistant For Long-Term Durability, 100 Percent Truck Bed Access, Compatible With BAKBox2, 100% Truck Bed Access, Supports Heavy Loads, Made In The USA, 2-Year WarrantyThe BAKFlip FiberMax is an aluminum hard folding truck bed cover with an FRP (Fiberglass Reinforced Polymer) surface, making the cover dent, scuff and ding resistant, as well as cooler to the touch. Its tough aluminum substructure, robust hinge design and patented slam latch system make the FiberMax an easy-to-use, dependable cover that is built to last.