Pentair 150 and 200 SqFt Clean & Clear Center Core

The Pentair 150 and 200 SqFt Clean & Clear Center Core (part number 178550) is a critical internal structural support component engineered specifically for Pentair Clean & Clear and Predator single-cartridge pool and spa filtration systems utilizing 150 and 200 square foot filter elements. Injection-molded from a heavy-duty, high-impact polymer composite, this rigid, skeletonized cylindrical column sits vertically at the absolute center of the filter tank chassis. Its primary mechanical role is to serve as an unyielding internal backbone that slides directly through the core of the fabric cartridge element, preventing the massive external hydraulic water pressure from collapsing, crushing, or distorting the pleated filter media under continuous system operating pressures up to 50 PSI. The highly perforated, open-lattice framework is precision-designed to maximize water flow dynamics, allowing fully clarified water to seamlessly pass through the cartridge fabric and down into the lower bulkhead assembly without restriction or flow bottlenecks. Built to endure continuous submersion in highly chlorinated water, bromine, and seasonal acid washes, its robust plastic architecture resists cracking and structural fatigue over years of heavy operational cycles. Due to its elongated, hollow, and open-grid plastic configuration designed to span the height of larger single-cartridge tanks, this individual center core carries a net product and shipping weight of approximately 1.80 to 2.20 pounds (about 28.8 to 35.2 ounces).