Pool Filter Lab

Cartridge record

Unicel C-4325

Also sold asPleatco PA225Filbur FC-1220OnCore OC-411FOEM 57010500OEM CX225RE

cross-checked against 3 sources

Verified specifications

The selected value is shown first. Expand any row to compare the source values retained by the dataset.

Cartridge specifications
Outside diameter4-5/8"
Source values
  • unicel 4-5/8"
  • pleatco 4-5/8"
Length11-7/8"
Source values
  • unicel 11-7/8"
  • pleatco 11-7/8"
Top cap2-1/16" / open
Source values
  • unicel 2-1/16" / open
  • pleatco 2 1/16
Bottom cap2-1/16" / open
Source values
  • unicel 2-1/16" / open
  • pleatco 2 1/16
Pleats138
Source values
  • unicel 138
Filter area25 sq ft
Source values
  • unicel 25
  • pleatco 25
Media weight3 oz
Source values
  • unicel 3
  • pleatco 3

Equivalent part numbers

Match the complete printed string. Similar-looking part numbers can describe different end caps or lengths.

Cross-reference equivalents
BrandPart numberVerification
UnicelC-4325cross-checked against 3 sources
PleatcoPA225cross-checked against 2 sources
FilburFC-1220single-source
OnCoreOC-411Fsingle-source
OEM57010500single-source
OEMCX225REsingle-source

Known equipment fits

Fitments are source-attributed. Confirm the housing model and cartridge measurements before ordering.

Filter and spa fitments
BrandModelOEM partSource
Apollo SpasHayward C-225—pleatco single-source
Apollo Spas——unicel single-source
Discovery SpasHayward C-225—pleatco single-source
Emerald SpasHayward C-225—pleatco single-source
Emerald Spas——unicel single-source
Grecian Spas/Discovery SpasHayward C-225—pleatco single-source
Hayward Pool ProductsHayward C-225—pleatco single-source
Hayward Pool ProductsMicroStar-Clear C225 (in-line)CX225REunicel single-source
HaywardCX225RE—unicel single-source
Pentair Pool Prod - American Products ReplacementsCommander II (in-line)57010500unicel single-source
Pentair Pool Products/American ProductsHayward C-225—pleatco single-source
Sonoma SpasHayward C-225—pleatco single-source
Sonoma Spas——unicel single-source

Browse related equipment

Source notes

Dimension neighbors

Records with the same outside diameter and a different length appear first, followed by the closest diameters. End-cap details still need to match.

4CH-950

4-5/8" × 12"

cross-checked against 2 sources

C-4327

4-5/8" × 11-5/8"

single-source

C-4327AM

4-5/8" × 11-5/8"

single-source

C-4403

4-5/8" × 11-5/8"

cross-checked against 2 sources

4CH-934

4-5/8" × 12-1/2"

single-source

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