Hayward C4030 SwimClear Cartridge Pool Filter, 425 Square Foot;

Hayward C4030 425sqft SwimClear reaches new horizons in cartridge filter technology. A cluster of four reusable polyester cartridge elements provides 425square feet of heavy-duty, dirt-holding capacity and extra-long filter cycles. SwimClear High-strength filter tank is made from durable, glass reinforced co-polymer to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems. Heavy-duty, tamper-proof, one-piece clamp securely fastens tank top and bottom together and allows quick access to all internal components without disturbing piping or connections. Quad-Cluster Cartridge Elements provide large filter area and extra dirt-holding capacity for long filter cycles. Precision-engineered core provides extra strength and superior flow. Self-aligning tank top and bottom make access to servicing Quad-Cluster cartridge elements quick and easy. CPVC union coupling connection provides plumbing options of 2-inch or 2-1/2-inch piping with 2-inch full flow internal piping for maximum performance. Manual high capacity air relief is a rapid release valve that bleeds air with a quick quarter turn of the lever.