Pack Mule Standards Posted December 5, 2016More rugged construction: The industry’s only deck formed from a single sheet of 10-gauge steel. Others use lighter-weight steel and welded decks.Flexible configuration: Order the number of shelves you need now, or add them when your needs change. Nobody else has that.Pack Mule service: We’ve learned what it takes to buy a trailer from the others. We promise to make it easier.The industry’s best warranty: Pack Mule offers the only three-year warranty in the business, just like we do on our electric vehicles.