Filter Cartridge | Harmsco | ST-105 | Heavy Duty Pool Replacement

The Harmsco ST-105 filter cartridge (HRST105) is the ideal replacement for worn or damaged components in your pool filtration system, restoring essential flow and filtration performance.

Designed as a direct replacement for ST-105 housings, this cartridge keeps your pool water clear by maintaining steady filtration efficiency and easing pump load. As a reliable replacement pool filter cartridge, it supports the pool filtration system through regular maintenance and after heavy use, ensuring consistent performance between cleanings.

Whether you manage a residential pool or a compact commercial setup, this Harmsco filter cartridge replacement fits ST-105 configurations and makes routine upkeep straightforward. The HRST105 model delivers dependable operation within your existing setup, minimizing downtime and preserving water quality.

• Direct replacement for ST-105 cartridges
• Restores filtration efficiency and water clarity
• Easy installation with standard ST-105 housings
• Durable construction for outdoor pool environments
• Compatible with HRST105 configurations for seamless retrofits

Equip your filtration system with the Harmsco ST-105 today and return to sparkling, inviting pool water. Add to cart to restore your pool’s clarity with a proven, long-lasting replacement.