Sand Box Full G.I Powder Coated Finish Fire sandboxes for fires that cannot be extinguished with water. The box is a smooth and grain-free bulge, with electrostatic spray paint, smooth, clean and tidy, and moisture-proof. Thickened high-strength box: the use of high-quality thickened steel processing, high hardness durable. Innovative space-saving design: box can be disassembled for shipping.