The Wayne 2 HP Cast Iron Lawn Pump is assembled in the US with foreign and domestic parts. 2 HP; max. flow rate is 4200 Gallons Per Hour (at 5 ft. / 30 PSI); 3950 GPH at 10 ft. of discharge lift at 30 PSI. Motor factory set to 240V. 2 in. NPT suction with 1-1/2 in. NPT discharge for maximum water flow.