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FilterHound cross-reference lookup

Pool & Spa Filter Cross-Reference Lookup

Search by part number, spa model, filter brand, or cartridge size. FilterHound helps you sniff out compatible replacements before you click through to Amazon.

Try: “PRB25-IN”, “Jacuzzi J-365”, “C-4950”

Pleatco Unicel Filbur OEM cross-refs

Popular searches

Most Popular Filter Cartridges

PRB25-IN / C-4326 / FC-2375

5″ × 13.9375″ • 25 sq ft

PRB50-IN / C-4950 / FC-2390

5″ × 13.3125″ • 50 sq ft

Browse Hot Tub Filters by Brand

American Whirlpool1 models Artesian3 models Beachcomber1 models Bullfrog5 models Caldera11 models Coleman1 models Dimension One3 models Hot Spring18 models Jacuzzi27 models LA Spas1 models Maax1 models Marquis5 models Master Spas5 models Sundance16 models Vita Spa3 models

How to Find Your Replacement Filter

1Check the label on your existing filter cartridge or inside the filter housing. Part numbers are printed on the end cap.
2Search or browse by part number, spa brand and model, or filter dimensions above.
3Compare cross-references - Pleatco, Unicel, and Filbur all make interchangeable cartridges. Generic brands can offer savings.
4Verify dimensions before ordering - diameter, length, and end-cap type must match your filter housing.

Featured Hot Tub Models

J-210

2-person · 2005–present

J-220

4-person · 2005–present

J-230

5-person · 2005–2007

J-235

5-person · 2012–present

J-245

6-person · 2012–present

J-275

6-person · 2005–present