Buyers Products Black Steel Side-Wall Extension Kit For DumperDogg®-Use With Steel Insert Model 5531020Buyers Products Black Steel Side Wall Extension Kit For DumperDogg Use With Steel Insert Model 5531020 Add volume capacity to DumperDogg inserts. All mounting hardware is included. Buyers Products Side Wall Extension Brackets fit on steel or stainless steel DumperDogg inserts to increase volume capacity, letting you load more. Simply install the brackets and add 2 x 12 boards to extend the height of the side walls The extension brackets include all