Can be used for many applications including ponds. 1-foot long. Smooth inside/ Corrugated outside. Smooth tube eliminates material build-upDimensions: 18 inches long x 18 inches wide x 13 inches highMaterials: Black corrugated PVCThe digital images we display have the most accurate color possible. However, due to differences in computer monitors, we cannot be responsible for variations in color between the actual product and your screen.Type: FloorMaterial: VinylAssembly: AssembledColor: Black