Replacement Filter Cartridges - Search By Dimensions

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Choosing the right filter cartridge for your pool or spa filter can be rather confusing. After all, we offer more than 500 different filter cartridges at Swimming Pools Etc. We have come up with several ways to find the right cartridge for your pool or spa filter. Once you have found the right cartridge, double check the dimensions and other specifications to make sure you have the right one. If you have any questions, do not hesitate to e-mail us. We answer every single email we receive from our customers. We want to make sure that you get the right product in a timely manner.

Original vs. Unicel Replacement Cartridges? We sell our customers Unicel replacement cartridges whenever possible because they are manufactured to the same high standards as the originals, but the cost is often far less. If you have any questions please call us at at 800.544.3730, or you can find out which Unicel number will best fit your system by calling call Unicel directly at 800.345.6650.

All our cartridges are arranged by size based on the cartridges outside diameter
Furthermore, at a particular OD measurement, each cartridge is then listed according
to its length (from shortest to longest). The cartridge length is determined by measuring the distance
in inches from end cap to end cap inclusive of any handle or extension.
How to determine the replacement cartridge for your pool or spa filter.
Measure the outside diameter (OD) of the cartridge in inches. Also, measure the cartridge length
in inches including the end caps and any handles or extensions. Then go to our listing of cartridges by dimensions.

2" Outside Diameter

3" Outside Diameter

4" Outside Diameter

5" Outside Diameter

6" Outside Diameter

7" Outside Diameter

8" Outside Diameter

9" Outside Diameter

10" Outside Diameter

Need information about cartridge filters?
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