Pentair 300SQF SYSTEM:3 INNER & OUTER CARTRIDGE PACK STA-051-6578
$518.00
Pentair 170145 Inner & Outer Cartridge Set — 300 Sq. Ft. Total Filtration Capacity Engineered for exceptional filtration performance, the Pentair 170145 Replacement Cartridge Kit is a genuine OEM solution for the System:3 S7M120 Modular Media Filter. This dual-cartridge set includes both the inner and outer elements required to restore your filter to peak clarity and flow performance. Designed with precision-molded cores and high-capacity pleated media, these cartridges offer maximum debris capture and extended service life with minimal maintenance. Ideal for large residential pools or high-usage environments, the combined 300 square feet of filtration surface areaensures fine particle removal and crystal-clear water quality. Simple to install and clean, the Pentair 170145 filter set is built for long-lasting performance and a hassle-free pool ownership experience. Key Features Optimized Compatibility: Specifically engineered for the Pentair Sta-Rite System:3 S7M120 Modular Media Filter. Dual Cartridge Design: Includes both the inner (100 sq. ft.) and outer (200 sq. ft.) filter elements to deliver full system coverage. Durable Construction: Reinforced end caps and precision-fit cores withstand pressure cycling and resist deformation. Extended Filter Cycles: High-efficiency pleats increase dirt-holding capacity, reducing the frequency of cleanings. Effortless Maintenance: Cartridges are easily removed and cleaned with a standard hose — no backwashing required. Technical Specifications Specification Detail Total Filter Area 300 sq. ft. Inner Cartridge 100 sq. ft. – 25.25" L × 8.5" Dia. Outer Cartridge 200 sq. ft. – 18.5" L × 16.25" Dia. Pentair Part Numbers 25021-0200S (Inner), 25022-0201S (Outer) Compatible Filter System:3 S7M120 Modular Media Filter Manufacturer Pentair OEM Part Number 170145 / STA-051-6578 Weight (Set) Approx. 35 lbs Whether replacing worn-out filter elements or performing scheduled maintenance, the Pentair 170145 Cartridge Kitensures your filtration system continues operating at its highest potential — delivering the clean, clear water your pool deserves. STA-051-6578170145 300SQF SYSTEM:3INNER & OUTER CARTRIDGE PACK