Outpak washout’s 6’x6’x11″h corrugated construction washout is specifically designed to accommodate pump trucks. A single wall, 55c michelman coated, wet strength washout, it is light, yet durable. It folds flat for easy transportation and storage. Comes with a 6mm leak proof poly liner. Great for concrete, paint, drywall mud, stucco and mortar. capacity: 1.33 cubic yards/260 gallons. Includes polyethylene liner.