The heavy-duty mortar box has superior construction to stand up to the wear and tear of a job site. The #10 gauge heavy-duty steel box is designed for a 10 cubic foot capacity. The box tapers 17-1/4" down from an inside measurement of 57" x 21-1/4" at the the top to 39" x 21" at the bottom for easy reaching and less waste. Heavy-duty construction allows for holding 10 cubic feet of material and only weighing 166 pounds. The box's joints are lapped with continuous welds for additional strength to hold lots of mortar. It can also be moved with ease with a forklift. A reinforced top lip adds strength to hold the structure. A 6" clearance on the bottom of the box provides adequate space for movement with forklifts. Must ship via truck. Proudly made in the USA.