Holman Milwaukee Packout Fixed Shelf Brackets Model 48263Holman Milwaukee Packout Fixed Shelf Brackets Model 48263 The Holman ProStow shelving fixed brackets can be used with either the ProStow Mount Plate (48258) to create a fixed Packout shelf or the Rolling Cart Strap (48259) to secure a rolling cart at the bottom of a set of ProStow shelves. Features and Benefits: Easy access to each Packout unit without having to unstack them or remove them from the shelf. 50lbs weight capacity per shelf. Adjustable