170146 | Pentair S7M400 Filter Inner & Outer Cartridge Set

The Pentair S7M400 Filter Inner & Outer Cartridge Set (Part #170146) is a genuine replacement cartridge pack designed for Pentair Sta-Rite System 3 S7M400 modular media pool filters. This complete set includes both the inner cartridge and outer cartridge elements, providing a combined 400 square feet of filtration area for high dirt-holding capacity and improved water clarity. The inner element provides approximately 136 sq. ft. of filtration while the outer cartridge delivers about 264 sq. ft., working together to trap fine debris and maintain efficient circulation. Built with reinforced pleated polyester filtration media and durable polyurethane end caps, the 170146 cartridge set is engineered for long service life and dependable filtration performance in residential in-ground pool systems.

Highlights

• Complete Dual-Cartridge Set: Includes both inner and outer cartridges required for the Pentair Sta-Rite System 3 S7M400 filter assembly.

• Large 400 Sq. Ft. Filtration Area: Combines a 136 sq. ft. inner cartridge and 264 sq. ft. outer cartridge for excellent dirt-holding capacity and longer filter cycles.

• Reinforced Pleated Polyester Media: High-quality filter fabric captures fine debris while maintaining strong water flow and filtration efficiency.

• Durable OEM Construction: Polyurethane end caps and reinforced media provide reliable durability and proper fit in compatible Pentair filter systems.

• Designed for S7M400 Filters: Engineered specifically for Pentair Sta-Rite System 3 S7M400 modular media filters to restore optimal filtration performance.