Call Us: 1-877-721-2555

Swimming Pool Supplies at

My Cart:

0 item(s) - $0.00
You have no items in your shopping cart.


Pentair RAI-051-3573

Pentair RAI-051-3573

Our Price:
$79.99 Save: $20.00 (20%)
List Price: $99.99
0 out of 5 (0 reviews)

**** These filters measure approximately 20 inches in length. To ensure you are ordering the correct filters please measure your existing filters for a match.****

The Pentair 178580 / R173573 Clean & Clear Plus 320 replacement Filter Cartridge measures 20 inches in length by 7 inches in diameter and with 3 inch openings on top and bottom. These filter cartridges feature Anti-Microbial technology preventing microbes such as mold, fungi, bacteria, and mildew from growing.

**This is a factory original Pentair replacement cartridge.


These Pentair replacement pool filter cartridges are also known as part number R173573 and are identical to Filbur part number FC-1976, Unicel part number C-7470 and Pleatco part number PCC80. 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.

  • Fits Pentair Clean & Clear Plus 320 Cartridge Filter
  • Pentair Part # 178580, 17-8580, R173573
  • Height: 20-1/16"
  • Diameter: 7"
  • Top: 3" Opening
  • Bottom: 3" Opening
  • Filter Area: 80 Sq Ft
  • 4 required for complete set
  • Identical to Filbur FC-1976, Unicel C-7470 & Pleatco PCC80
  • Factory original Pentair replacement part

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 any debris and 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.

100% Satisfaction Guarantee

We expect our customers to be 100% satisfied with the products we sell and the service we provide. If at any time in the next 30 days you are NOT 100% satisfied with your purchase, you may send your purchase back for a refund or store credit for the price paid for the merchandise (minus what you paid for shipping), or you may exchange it for another item in our store.

In Stock
Related Products