The Universal Designed Valterra Water Tank features a one-piece extruded construction eliminating the possibility of leakage; baffled every 18 inches for surge control.• Gravity fill/drain. Capacity: 18 Gallon/68 LiterShape: RectangularLength: 36 InchWidth: 16 InchHeight: 8 InchMaterial: ABS PlasticWith Cap: NoWith Tubing: NoWith Adapter: NoWith Mounting Hardware: No One-piece extruded construction eliminates the possibility of leakage Baffled every 18 inches for surge control Not for use with electric pumps, low pressure applications only | Valterra 8" x 16" x 36" ABS Water Tank | ABS Plastic