By Sta-Rite



Part # 250220201S

Manufacturer Code 25022-0201S

Dimensions 18.5" L x 16.5" W x 16.5" D

Alternate Part #'s 25022-0201S, 17-102-1260

Product Description

O.E.M. Sta-Rite® Outer Replacement Cartridge for System 3 Mod S7M120 Filters

Is your pool water starting to look a little dull? Is your pressure gauge reading a higher PSI than normal? Are your pool jets a little less powerful? These are all signs that it is time to replace your pool filter cartridge. Replace your pool filter cartridge today and regain that crystal clear pool water and extend the life of your pool pump.

Typically for single cartridge pool filters we suggest replacing your cartridge every 6-12 months and for filters which take multiple cartridges, we suggest replacing your cartridges every 3 years.

This Cartridge is Commonly Used In

Not Your Cartridge?

Is this not your Cartridge? Don't worry, we carry thousands of Pool Filter Replacement Cartridges to replace all of the most popular OEM brands such as Sta-Rite®, Pentair® / Pac Fab®, Hayward®, Purex®, American Products®, Jacuzzi®, Hot Springs®, Coleman®, and more. Click here for more Pool Filter Replacement Cartridges

This is the larger of 2 cartridges required for the S7M120.

The inner 100 sq ft cartridge is sold separately.

Product Specifications

Filter Model:
S7M120 Outer System:3
Filtration Area:
200 sq. ft.
18-1/2 in.
16-1/2 in.
Top Inside Diameter:
10 in.
Bottom Inside Diameter:
10 in.
Top Style:
Bottom Style:
Castle, Open
Media Weight:
4 oz.
OEM #:

?     Asked on 3/22/2015by Brian

I need to replace this cartridge. I thought the part numbers on top of my existing installed cartridge was 25022-0221. It is 16.5 inches wide. Is the S7M120 200 Sq Ft the same cartridge? Thanks again, Brian

A  Answered on 3/23/2015 by InyoPools Product Specialist Andy O.

Hello Brian, The 25022-0221 has been replaced by the 250220201S and is the correct filter for the S7M120. The part number for the smaller one has also changed from 25021-0220 to 250210200S.

?     Asked on 9/5/2015by Joan Stone

I need filters for my Sta-Rite pool pump. 'outer filter' is pn 25022-0221 - tall inner filter has part number wore off - I think it is 25021-0220 - I need both filters. Tall filter is 27" ht. (28 1/2 including feet) with 4" ID and 8 1/2" OD. Thank you!

A  Answered on 9/9/2015 by InyoPools Product Specialist Lennox H.

HI Joan, The S7M120 200 Sq Ft. Outer Replacement Cartridge (250220201S) and the S7M120 100 Sq Ft. Inner Replacement Cartridge would be the correct filters that you will need.

?     Asked on 2/3/2016by Steve

I am looking to replace both filters in my Sta-Rite pool pump. Your recent answers have answered the question for the large filter but for the small inner filter, I am looking for the one with 20 micron and 100 sq. feet. Can I simply go with the #2502-10200s that you mentioned in a previous discussion? Thank you

A  Answered on 2/4/2016 by InyoPools Product Specialist Lennox H.

Hi Steve, The 100 SQFT Small Cartridge (25021-0200S) will be the correct inner cartridge that is used with this Outer Cartridge for the System 3 S7M120 unit.

?     Asked on 6/14/2016by John T

My STA Rite S7M120 filter calls for the cartridges - 25021-0200S and 25022-0201S which total 300 SQ FT. Is it true that the higher cartridges totaling 400 SQ FT would also fit my filter and actually clean the pool better - 25021-0223 and the 25022-0224? It looks like they are virtually the same size within a 1/4". Please let me know as soon as you can. Thank You John T

A  Answered on 6/18/2016 by InyoPools Product Specialist Lennox H.

Hi John, The S7M400 will not fit into the S7M120 filter canister.

?     Asked on 4/30/2020by christopher cassels

Can you please tell me what filters i need for my s7m400? Chris

A  Answered on 11/4/2020 by InyoPools Product Specialist Hector F.

Hi Christopher, the replacement inner cartridge for the Sta-Rite S7M400 model cartridge filter is 250210223S and the outer replacement cartridge is part number 250220224S


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