Product Overview
The Filbur FC-6425 Replacement Filter Cartridge 4-Pack is designed for compatible Hayward SwimClear C3025 and C3030 cartridge filters.
Each cartridge provides approximately 81 sq. ft. of filtration area, giving you a complete four-cartridge replacement set for compatible SwimClear filter systems.
Filbur cartridges are engineered for strong dirt-holding capacity, efficient water flow, and dependable service life. The FC-6425 uses 4 oz. filtration media, molded end caps, and an extruded PVC center core for structural support during demanding pool filtration operation.
This aftermarket replacement set provides a convenient alternative to Hayward OEM CX580XRE / CX580XREPAK4 cartridges without requiring adapters or modifications when used in the correct filter.
Key Features & Benefits
- Complete 4-Pack – Replaces all four cartridges in compatible SwimClear filters at the same time.
- 81 Sq. Ft. Per Cartridge – Provides the filtration capacity required for the applicable Hayward filter system.
- 4 oz. Pool Filtration Media – Designed for dirt-holding capacity and reliable water flow.
- PVC Extruded Core – Provides structural support under normal filtration pressure.
- Molded End Caps – Designed for straightforward installation without additional adapters.
- Embossed Filbur Part Numbers – Makes future cartridge identification easier.
- 3" Open Top & Bottom – Matches the compatible Hayward-style cartridge configuration.
- Direct Aftermarket Replacement – Cross-references common Hayward, Pleatco, and Unicel cartridge numbers.
Filbur specifically lists FC-6425 as 7" diameter × 19-5/8" long with 81 sq. ft. of media per cartridge.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Filbur |
| Manufacturer Part Number | FC-6425 |
| Product Type | Replacement Pool Filter Cartridge Set |
| Pack Quantity | 4 Cartridges |
| Filtration Area | 81 Sq. Ft. Per Cartridge |
| Outside Diameter | 7" |
| Length | 19-5/8" |
| Top Opening | 3" Open |
| Bottom Opening | 3" Open |
| Media Weight | 4 oz. |
| Core Construction | Extruded PVC |
| Application | Pool & Spa |
| Compatible Filter Family | Hayward SwimClear |
| Primary OEM Cross Reference | CX580XRE |
| Approx. Pack Weight | 17.7 lbs |
| Shipping Dimensions | 15" × 15" × 20.5" |
| UPC / GTIN | 645544064257 |
| Condition | New |
Compatible Hayward Filters
The Filbur FC-6425 is commonly used with:
- Hayward SwimClear C3025
- Hayward SwimClear C3030
- Compatible C3020 applications using CX580XRE cartridges
Hayward's current C3030 manual specifies CX580XRE, with four cartridges required, confirming the replacement architecture used by FC-6425.
Cross-Reference Part Numbers
The FC-6425 cross-references several commonly used replacement cartridge numbers:
| Manufacturer | Part Number |
|---|---|
| Hayward | CX580XRE / CX580-XRE |
| Hayward 4-Pack | CX580XREPAK4 |
| Filbur Single Cartridge | FC-1225 |
| Pleatco | PA81 / PA81-PAK4 |
| Unicel | C-7483 |
These cross-references are supported by Filbur's own catalog and current replacement-filter data.
Cartridge Dimensions
Each FC-6425 cartridge measures approximately:
7" Outside Diameter
19-5/8" Length
3" Open Top
3" Open Bottom
Always compare the dimensions and existing cartridge number before ordering, especially on older SwimClear filter installations.
Why Replace All Four Cartridges Together?
A four-cartridge filter performs best when all elements have similar flow resistance and condition.
Replacing the full set can help provide:
- More balanced water flow
- Improved filtration
- More consistent filter pressure
- Easier maintenance scheduling
- Reduced chance of one older cartridge restricting the system
- Consistent service life across the complete filter set
Maintenance Tips
For maximum cartridge life:
- Clean cartridges when filter pressure rises approximately 8–10 PSI above clean starting pressure, or according to the filter manufacturer's instructions.
- Use a garden hose with a focused spray pattern to clean between pleats.
- Avoid damaging the pleated media with excessive pressure.
- Inspect the end caps, bands, pleats, and center core during each cleaning.
- Replace cartridges that are torn, collapsed, cracked, or no longer clean effectively.
- Keep pool water chemistry properly balanced.
Frequently Asked Questions
How many cartridges come in FC-6425?
Four cartridges are included.
How much filtration area does each cartridge have?
Approximately 81 sq. ft. per element.
Does FC-6425 fit a Hayward C3030?
Yes. It replaces the CX580XRE-style cartridges used in compatible C3030 filters. Hayward specifies four CX580XRE cartridges for the C3030.
Does it fit the Hayward C3025?
Yes. FC-6425 is specifically marketed for compatible C3025/C3030 SwimClear systems.
Is this a genuine Hayward cartridge?
No. This is a Filbur aftermarket replacement cartridge set manufactured to fit compatible Hayward filtration equipment.
What is the OEM Hayward cross reference?
CX580XRE.
Why Buy From Pool Supply Depot?
Pool Supply Depot supplies replacement filter cartridges, complete filters, pumps, heaters, automation systems, salt systems, lighting, and OEM and aftermarket pool equipment nationwide.
If you're unsure which cartridge set fits your filter, send us the filter model number or existing cartridge part number and our team can help confirm compatibility before ordering.
Order the Filbur 81 Sq Ft SwimClear C3025/C3030 Replacement Cartridge 4-Pack | FC-6425 from Pool Supply Depot today.