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Sta-Rite 25021-0223S System 3 Inner Filter Cartridge for S7M400

Availability: In Stock

Regular Price: $199.99

Sale Price $154.99

You Save: $45.00  (22%)

Quick Overview

The Sta-Rite 25021-0223S Filter Cartridge is compatible with and fits the Sta-Rite System 3 S7M400 swimming pool cartridge filter. The System 3 Filter has an inner and outer filter cartridge. The 25021-0223S filter is the Inner Cartridge and is the smaller of the two cartridges. This filter cartridge is the factory original Sta-Rite replacement filter cartridge.


These replacement Sta-Rite filter cartridges are the factory original replacement filters, Sta-Rite part number 25021-0223S. These filters are constructed with thermally bonded polyurethane caps and a punched PVC pipe core that will ensure consistent water flow through your filters along with the durability you depend on.

  • Factory original Sta-Rite replacement
  • Sta-Rite part number 25021-0223S
  • Fits Sta-Rite S7M400 modular media 400 Sq Ft filter
  • Inner cartridge
  • Filter Area: 136 Sq Ft
  • Fits inside 25022-0224S - sold separately

To clean your pool filter just remember these 4 simple steps; rinse, soak, rinse, dry. Rinse your filter out with a garden hose to remove and debris dirt still attached to your filter. Next soak your filter in a filter cleaner solution overnight, then remove your filter from the solution and rinse with a garden hose. Set your filter in a sunny location and let it air dry completely. Finally reinstall your pool filter per your manufacturer’s instructions.

Additional Information
Delivery Time 2-5 Business Days
Manufacturer Sta-Rite
Technical Specs

Filter Area: 136 Sq Ft
Inner Cartridge (small)

SKU STA-06-285
Manufacturer Part # 25021-0223S
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