🌀 Pentair 25021-0200S System3 Small Inner Filter Cartridge
For S7M120 & S8M150 Modular Media Filters | Genuine Pentair Replacement

The Pentair 25021-0200S is a genuine OEM small inner cartridge designed for use in Pentair System:3 Modular Media Filters, including S7M120 and S8M150 models. This cartridge delivers exceptional filtration, capturing fine debris and helping maintain crystal-clear pool or spa water.

✅ Key Features:

• 🔄 High-efficiency pleated media for superior dirt-holding capacity
• 🧩 Specifically designed as the small inner cartridge for Pentair System:3 S7M120 and S8M150 filter systems
• 🛡️ Genuine Pentair quality ensures a perfect fit and reliable performance
• ♻️ Easy to install and clean for long-lasting filtration
• Compatible Part Numbers: 25021-0200S (small/inner), pairs with large outer cartridge 25022-0201S for complete set

📏 Specifications:

• Length: 20.06 inches
• Diameter: 8.5 inches
• Media Area: 100 sq ft
• For use with: S7M120 & S8M150 Modular Media Filters

🔧 Installation & Maintenance:

• Turn off pump and relieve system pressure before servicing
• Remove filter lid and pull out old cartridge
• Insert new inner cartridge, ensuring proper alignment
• Reassemble filter and restore system operation
• Clean cartridge regularly for optimal performance

💡 Pro Tip: For best results, replace both the small inner (25021-0200S) and large outer (25022-0201S) cartridges at the same time.

🛠️ Premier Pool & Spa stocks a wide selection of Pentair replacement filter cartridges and pool maintenance supplies. Contact us for expert advice on filter care and water quality!