About FilterHound
FilterHound is a free, independent cross-reference database for pool and hot tub filter cartridges. Our goal is simple: help pool and spa owners quickly identify the correct replacement filter for their system, including interchangeable alternatives from major brands like Pleatco, Unicel, and Filbur.
Pool and spa filter cross-referencing can be confusing. The same physical cartridge is often sold under multiple part numbers by different manufacturers, and finding the right OEM equivalent or compatible generic isn't always straightforward. FilterHound consolidates that data in one place.
What we cover
- Pleatco, Unicel, and Filbur cross-reference data
- OEM part number equivalents from major spa and pool brands
- Filter specifications: dimensions, square footage, end-cap type
- Compatible hot tub and pool filter system models
- Links to purchase replacements on Amazon
Data accuracy
Cross-reference data is compiled from publicly available manufacturer catalogs. While we strive for accuracy, filter compatibility can change across model years. Always verify the part number against the label on your existing cartridge or your owner's manual before purchasing.
Amazon Associates
FilterHound participates in the Amazon Associates program. When you click a link to Amazon and make a qualifying purchase, we may earn a small commission at no additional cost to you. This helps keep the database free. See our full disclosure.
Contact
Have a correction, missing part number, or feedback? Get in touch.