Pleatco PA225 = Unicel C-4325 = Filbur FC-1220 = Filbur FC-0640
25 sq ft pool filter, 4-5/8" diameter × 11-7/8" long. Top: 2-1/16" open · Bottom: 2-1/16" open. Pleatco application: Hayward MicroStar-Clear C225, C200, C120 (in-line), American Commander II.
Interchangeable cartridges
- Unicel C-4325 confirmed by: Pleatco p.47 (Unicel to Pleatco cross reference) Unicel p.7 (Cartridges by series (dimensional listing))Unicel note: Note: Hayward original has 4-3/4" OD and 11-13/16" overall length. American original has 4-11/16" OD.
- Filbur FC-1220 confirmed by: Pleatco p.48 (Filbur to Pleatco cross reference) Filbur p.33 (Reverse cross reference (Unicel to Filbur)) Filbur p.9 (Dimensional cartridge listing)
- Filbur FC-0640 confirmed by: Filbur p.33 (Reverse cross reference (Unicel to Filbur)) Filbur p.9 (Dimensional cartridge listing)
Check before you order
- Listed by Filbur's reverse cross reference only; Pleatco maps this cartridge to a different Filbur number.
Published dimensions, side by side
Each manufacturer measures a little differently. Compare these with your old cartridge.
| As published by | Pleatco PA225 source | Unicel C-4325 source | Filbur FC-1220 source |
|---|---|---|---|
| Outside diameter | 4-5/8" | 4-5/8" | 4-5/8" |
| Length | 11-7/8" | 11-7/8" | 11-7/8" |
| Top end | 2-1/16" open | 2-1/16" / open | 2-1/16" open |
| Bottom end | 2-1/16" open | 2-1/16" / open | 2-1/16" open |
| Filter area | 25 sq ft | 25 sq ft | 25 sq ft |
| Pleats | not listed | 138 | not listed |
| Media weight | 4 oz/yd² | 3 oz/yd² | not listed |
Where to buy
Search any retailer for C-4325 or PA225 or FC-1220 or FC-0640. These are the same cartridge under different brand names.
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OEM part numbers this cartridge replaces
As printed in the cited aftermarket catalogs. Match the number on your old cartridge or in your filter manual exactly.
| OEM number | Listed in |
|---|---|
CX225-RE | Pleatco p.31: OEM part # column |
CX200-RE | Pleatco p.31: OEM part # column |
CX120-RE | Pleatco p.31: OEM part # column |
CX225RE | Unicel p.37: OEM cross reference: Hayward Pool Products |
57010500 | Unicel p.50: OEM cross reference: Pentair Pool Prod - American Products Replacements |
Pool filters and equipment brands that use it
From the OEM cross reference in the Unicel 2026 Replacement Guide. A brand may use several sizes, so check your filter model and measurements.
- Apollo Spas Unicel p.27
- Emerald Spas Unicel p.35
- Hayward Pool Products (models: MicroStar-Clear C225 (in-line); OEM CX225RE) Unicel p.37
- Pentair Pool Prod - American Products Replacements (models: Commander II (in-line); OEM 57010500) Unicel p.50
- Sonoma Spas Unicel p.56
FAQ
What is the Unicel equivalent of Pleatco PA225?
The catalogs cross-reference Pleatco PA225 to Unicel C-4325.
What is the Filbur equivalent of Pleatco PA225?
The catalogs list Filbur FC-1220, FC-0640.
What size is the PA225 filter?
Pleatco lists PA225 as 4-5/8" outside diameter by 11-7/8" long, top: 2-1/16" open, bottom: 2-1/16" open, 25 sq ft.
Which OEM part numbers does it replace?
Listed OEM numbers: CX225-RE, CX200-RE, CX120-RE, CX225RE, 57010500.
Sources: Filbur Product Catalog and Reference Guide (2024) · Filbur Product Catalog and Reference Guide (2024) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Pleatco 2023 Catalog & Cross Reference Guide (Pentair) · Unicel 2026 Replacement Guide. Last checked 2026-11-03.