Atlantic Water Gardens Submersible Pond & Waterfall Pump, Cast Iron & Stainless Steel Body, 3,165 GPH A-Series Direct Drive pumps are built for the highest head, high volumeapplications, to tackle the longest runs and tallest falls. A-Series pumps feature heavy-duty cast iron and stainless steel housingfor years of dependable service Continuous duty Direct Drive motors reduce maintenance to simply keeping the intake screen clean Double silicone carbide mechanical seals and dual drive bearings reduce frictionand wear, prolonging motor life Thermal overload protection shuts down pump in low water conditions, toprevent serious damage due to overheating