This 1 HP Campbell Hausfeld Pump is assembled in the USA and tested extensively for performance that lasts. The 100SCHF will deliver dependable, energy-efficient, ultra-quiet performance for years to come and able to pump up to 6,095 gallons per hour. It is The Hardest Working Pump You'll Never Hear®. This rugged submersible sump pump features a mechanical float switch that fits in an opening as small as 11 inches. The durable stainless steel and cast iron construction gives this pump long-lasting operation, with a high-capacity 1-1/2-inch discharge to maximize performance and the unique top-suction design eliminates air-lock and reduces wear and tear.