The 25 in Upright Extension creates more vertical space in the lower part of your Configurations closet. It allows Configurations accessories, such as shelves, drawer units or shoe shelves, to be added to your closet. The extension maximizes your storage space while keeping items off the floor. This extension creates more vertical space in the lower part of your Configurations closet. Maximizes storage space while keeping stored items off the floor. Allows for Configurations accessories to be added to lower part of closet such as additional shelves, drawer unit or shoe shelves. It includes the 25 in extension and the bracket to attach to existing upright.