Steel mortar box made of heavy-duty 16 gauge steel. Smooth interior makes mixing easier. The 61-3/4″ x 33″ x 12″ box creates 9 cubic feet of space for mixing and holding mortar for your bricklaying project. The box tapers 12″ down from an inside measurement of 61-3/4″ x 33″ at the the top to 34″ x 23″ at the bottom for easy reaching and less waste. Leakproof construction minimizes messes on a jobsite. Must ship via truck due to size. Proudly made in the USA.