Pool Filter Source

Pool & spa replacement filters

Find the filter that fits.

Get started

Pool Filter Finder

Search by model or part number

Use the label on your filter tank, spa, or old cartridge.

Enter the full number, including any letters and dashes.

Can’t read the label?Measure the cartridgeEnter its diameter, length, and end shapes.

Before you order

Check the number, size, and ends.

Similar-looking cartridges can have different lengths, openings, threads, or handles. Compare the old cartridge with the result before ordering.

See the measuring guide
01

Copy the full number

Include every letter, dash, and zero from the equipment or cartridge label.

02

Measure the body

Compare outside diameter and cap-to-cap length with the old cartridge.

03

Compare both ends

Check for open holes, closed caps, handles, threads, and sealing rings.