Filter Cartridge 100 SqFt Generic (UHD-SR100) - NFC2550



Part # NFC2550

  4.2 Average  



Part # NFC2550

Dimensions 8.6875" L x 8.6875" W x 25.6875" D

Alternate Part #'s 20201, FC-2550, FC2550, PSR100, PSR100-4, PSR1004, R173347, STA06242, UHD-SR100, UHDSR100, UNI605224, WC108-58S2X, WC10852S1X, WC10858S2X, 17-175-1685, APCC7294, PLEPSR100-4

Product Description


  • Our generic replacement cartridges are less expensive than the original manufacturers' brands yet still meet the same high quality standards.  The key components of a cartridge - filter media, core, and end cap - are all designed for maximum water flow and cartridge life.
  • The filter media is point bonded polyester with even fiber distribution which results in an even dirt load and increased water flow.  
  • The Sharp & Uniform pleated media provides filtration area (square footage) that meets or exceeds the original manufacturers' specifications.  
  • An open core design provides sturdy support for the media without restricting flow.  Increased flow rates result in less wear on the pump and reduced energy usage.  
  • Anti-microbial end caps inhibit the growth of bacteria, mold and mildew while supporting the core and media.
  • Banded Pleats maximize flow during operation, and help to reduce the frequency of cleaning.  Banded pleats also make the cartridge easier to clean.
  • We carry thousands of generic 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. 

You should consider the Microban version of this filter!

Why Microban Protection?

Water and an ample food source provide the ideal condition for bacteria to quickly multiply and grow. In fact, on an unprotected surface, some microbes can double in number every 20 minutes. And only when they’ve multiplied to hundreds of thousands, can they actually be seen by the naked eye.

The images below show bacteria growth on a standard pool filter cartridge versus a pool filter cartrdge infused with Microban® antimicrobial protection over a 24 hour period.

Microban Pool Filter Cartridge

After viewing these images, you can see how Microban® protection begins to work immediately, disrupting key bacterial cell functions so that bacteria are unable to grow or reproduce on the surface. While on the unprotected surface, bacteria quickly multiply.

Top End Cap Top End Cap
Bottom End Cap Bottom End Cap

Product Specifications

Filter Model:
Posi-Flo TX/TXR/PTM 100
8 - 11/16 in.
25 - 11/16 in.
Top Style:
Top Inside Diameter:
Bottom Style:
Bottom Inside Diameter:
Filtration Area:
100 sq. ft.
Media Weight:
4 oz.
OEM #:
Unicel #:
Filbur #:
Pleatco #:

?     Asked on 5/11/2020 by Rachael

Will this work for part number WC108-58S2X

A  Answered on 5/11/2020 by InyoPools Product Specialist Patrick P.

Yes this is the correct replacement cartridge for the WC108-58S2X PTM100

?     Asked on 4/29/2020 by Joe

Will this fit my posi-flow model# 100txr?


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

Hi Joe, yes this is the correct replacement filter cartridge for the Sta-Rite Posi Flo 100 TXR model filter. 

?     Asked on 4/13/2020 by Wavell Munro

my sta-rite filter is 100TXR. is this an exact fit?

A  Answered on 4/13/2020 by InyoPools Product Specialist Patrick P.

Hi Wavell, Yes this cartridge is an exact fit for your sta-rite filter 100TXR

?     Asked on 1/25/2020 by gary

max flow rate for Filter Cartridge 100 Sq. Ft Generic (UHD-SR100). pool Tec is replacing my pool pump with a 2.5 hp. variable speed. pool size 16'x32' avg. depth 4.7' 40 ft. of head loss

A  Answered on 1/29/2020 by InyoPools Product Specialist Lennox H.

Hi, Gary. The max flow rate is 100 GPM. 

?     Asked on 12/28/2019 by Richard

Will this fit a Posi- Flo 11 pool filter. Dimensions are 250mm with diameter of 220mm

A  Answered on 12/30/2019 by InyoPools Product Specialist Lennox H.

Hi, Richard. This replacement cartridge will fit a Posi- Flo II with a diameter of 296.86 mm and a length of 652.46 mm.

?     Asked on 10/11/2016 by

will this filter fit in Posi Clear RP Filter?

A  Answered on 10/11/2016 by InyoPools Product Specialist Hector F.

No these are a different design to the Posi Clear RP model cartridges.

?     Asked on 12/12/2015 by rob

Will this filter element fit my sta rite 100 tx?

A  Answered on 12/14/2015 by InyoPools Product Specialist Robert M.

Hello Rob - The NFC2550 is the correct cartridge for the Sta-Rite 100TX.

?     Asked on 9/25/2015 by Henry Rivero

Will this filter sub for the Sta-rite PTM100

A  Answered on 9/29/2015 by InyoPools Product Specialist Lennox H.

Hi Henry, The Filter Cartridge 100 SqFt Generic (UHD-SR100) can be used in the Sta-Rite PTM100 filter.


Est. Repair Time

Less than 1 hr

Tools Needed


No problem

Written on 4/5/2020 by Guest

Easy to install good for about 2 years then starts to fall apart.

Were these instructions helpful? 


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