Pentair S7M120 Inner and Outer Filter Cartridge Package - 100/200 Square Feet pool-size_75000-99999 the brand that sets the

the brand that sets the design standard

The ladder is thicker and 50% heavier

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then calcium hardness in your pool

Includes valve top assembly

Pentair S7M120 Inner and Outer Filter Cartridge Package - 100/200 Square Feet pool-size_75000-99999 the brand that sets theThis is a package of Pentair 170145 Inner and Outer Cartridge Filter Elements for System 3 S7M120 Filters. It has a media area of 100 Square Feet for Inner Cartridge and 200 Square Feet for the Outer Cartridge. Cartridges are made of superior reinforced polyester pleated material with polyurethane end caps. Pentair reusable cartridge filter elements provide a high degree of water clarity and longer filter cycles. To maintain your pool water