Little Giant WRSC-6 Compact Drainosaur Tank and Pump Combination System Pre-assembled for easy installation 3-1/2 Gallon tank size Includes two 1-1/2-Inch MNPT x 2-Inch slip adapters for inlet and discharge Includes one 2-Inch MNPT x 1-1/2-Inch slip adapter for vent Cylindrical polypropylene tank