UWS Wedge Box Series is designed with an offset hinge design to fit tight against the front of the bed and still allow the lid to open with out rubbing. This unit is another excellent choice for 5th wheel and goose-neck trailer applications. Heavy foamed lids* and super-duty lift cylinders, stainless steel locking latches, and all of the other exclusive UWS features make these the most popular and very best value of any chest box sold. Weather-tight design keeps everything inside dry and safe.