The Oase Aquamax Eco Expert 44000 pumps are an energy-efficient pump range designed for extremely powerful but economic performance, they are perfect for use in demanding filter systems or for large watercourses and waterfalls. They have robust stainless steel strainer which allows particles as large as 11mm to pass through and be pumped. The design includes unique, patented frost protection meaning the pump will not be damaged at temperatures as low as -20°C.