Pondmaster, Pond-Mag 5, 500 GPH, Magnetic Drive Utility Pump, Durable, Engineered To Last, Powerful Ceramic Magnetic Impeller Is The Only Moving Part Which Makes These Pumps Extremely Energy Efficient, Rigid Pre-Filter Included With Pump, Ceramic Shaft For More Durability, 18' Grounded Power Cord, Operates Inline Or Submersible, Horizontal Or Vertical Positioning, 5 Year Limited Warranty.