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helping to keep internal components in place during operation
By maintaining a clear zone around the blower
Pentair manufacturer part number 170024
Protect your family
Pentair CNC Plus 520 Replacement Filter Cartridge | R173578 Aluminum helping to keep internal componentsWhat This Part Is Used For Pentair R173578 Cartridge Replacement CNC Plus 520 is a replacement filter cartridge for Clean and Clear Plus 520 filtration systems. It removes debris and fine particles during normal circulation. Why This Part Matters A clogged or aging cartridge reduces filtration performance and increases system pressure. Replacing it restores proper water clarity and balanced flow. Clean cartridges help protect pumps and heaters from