SwimClear cartridge filters provide the most energy efficient flow and save up to 2,500 gallons of water per year by eliminating the need to backwash. Top manifold configuration provides excellent filtration and hydraulic performance for reduced cost of operationCleanable cartridge elements eliminate the requirement for backwashingFilter tanks are made from the most durable materials to meet the demands of the toughest applications and environmental conditionsHigh capacity, rapid release manual air relief valve bleeds air with a quick quarter turn of the leverHeavy-duty, tamper-proof, one piece flange clamp securely fastens tank top and bottom and allows quick access to all internal components