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?     Asked on 6/14/2015by Inyo Visitor

Will this filter replace: Unicel 135 sq ft Wc108-59SIX 135 GPM 50 PSI 135 GPM? I do not want to order a filter I am not sure will replace my existing filer.
 Reply

A  Answered on 6/14/2015 by InyoPools Product Specialist Patrick P.

Yes this would be the correct replacement cartridge for your Wc108-59SIX.
 Reply


?     Asked on 3/19/2016by Bonnie

is this the correct filter for a Posi Flo model Tx 135? Also is this the right filter for our 20x40 in ground pool with an eight foot deep end?
 Reply

A  Answered on 3/21/2016 by InyoPools Product Specialist Lennox H.

Hi Bonnie, This is the correct replacement cartridge for the Posi Flo TX135.
 Reply


?     Asked on 2/22/2017by marie

I have a silver bullet type (sta-rite posi-flo) pool filter. it uses the generic 135sf filters, tall ones. I need to know what size o ring to get because I need to replace it.
 Reply

A  Answered on 2/22/2017 by InyoPools Product Specialist Scott W.

The o-ring is part number WC9-3.
 Reply


?     Asked on 6/17/2017by Inyo Visitor

what is the size of this filter
 Reply

A  Answered on 6/17/2017 by InyoPools Product Specialist Hector F.

The dimensions read as approximately 8-11/16" in diameter, 34-1/2" in length, 4-3/16" top and bottom inside diameter,
 Reply


?     Asked on 5/7/2018by Don Brincka

I have a "Posi-Flo" filter, requiring a "135 TXR" filter cartridge. Is this a replacement for it?
 Reply

A  Answered on 5/8/2018 by InyoPools Product Specialist Hector F.

Yes, this is would be the correct generic cartridge replacement for your filter. 
 Reply


?     Asked on 8/5/2019by Ed

Will this cartridge fit my 30 yr old Sta Rite filter model #1357XR? The cartridge model I'm currently using is WC108-59SIX. Also, what would the part number be for the O-ring to fit this filter?
 Reply

A  Answered on 8/7/2019 by InyoPools Product Specialist Lennox H.

Hi, Ed. I was unable to use any of the info provided to locate the correct replacement cartridge. Please re-verify the info.
 Reply


?     Asked on 11/21/2021by walt huffman

i have a stainless steel housing for a pool cartridge filter. the brand is sta-rite. it is a posi-flo model 135 txr. on the housing is a replacement cartridge number: wc 108-59 s1x. what cartridges are available? also, what does the r mean in txr, and what does the 1 mean in s1x? thank you.
 Reply

A  Answered on 1/7/2022 by InyoPools Product Specialist Craig C.

Hello Walt.  Pentair/Sta-Rite indicates the replacement filter element as parts number WC108-59S2X.  A compatible replacement filter element is the NFC2560 cartridge.  
 Reply


?     Asked on 4/14/2022by Sherman

I have a stainless posi-flow 135TXR, length 15, width 15, height 80. The replacement indicated on the canister is wc108-59s1x. I have been unable to find replacements with the same specs. Could you please provide the appropriate replacement information and/or suitable alternatives. The pool is 20 X 40. Much obliged.
 Reply

A  Answered on 4/15/2022 by InyoPools Product Specialist Craig C.

Hello Sherman.  Attached please find the Sta-Rite Posi-Flo Stainless Cartridge (TX Models) exploded parts diagram.  Sta-Rite Posi-Flo Stainless Cartridge (1 Piece Tank TX Models)  The Posi- Flo 135TXR filter cartridge is identified as a generic part number NFC2560 (OEM WC108-59S2X)    Filter, Cartridge 135 Sqft Generic (FC-2560) - NFC2560
 Reply


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