Unicel® C-4975 Replacement Filter Cartridge for Hot Tubs & Spas

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The C-4975 cartridge features advanced pleated media that captures dirt, oils, and debris as small as 10-20 microns, ensuring your spa water stays sparkling clean between maintenan ce cycles. Whether you're replacing a worn-out filter or upgrading your water care routine, the Unicel C-4975 offers the perfect balance of quality, durability, and value. Show more