Why it matters
The Future Way FWPFPRB25 Spa Filter Cartridge is a replacement spa and hot tub filter cartridge that its listing says replaces Unicel C-4326, FC-2370, 2 Pack.
3 other cartridges we cover name at least one of the same part numbers: TOREAD TRF-4326 Spa Filter Cartridge, Cryspool CP-04072 Spa Filter Cartridge, Wowreed C-4326 Spa Filter Cartridge. Compare filter area and pack size before choosing.
Match the part number on your old cartridge or filter housing first; if it has worn off, measure length, outside diameter and both center holes. A cartridge that is close but not exact can let dirty water bypass its seals.
The listing gives dimensions of 10.43 x 5.71 x 14.17 inches and a weight of 2.59 pounds.
Who it's for, and who should skip it
Good fit if
- Spas and hot tubs
- Owners with the original part number
Look elsewhere if
- Filters with a different part number
Pros and cons
Pros
- Replaces Unicel C-4326, FC-2370, 2 Pack
Cons
- Check length and hole sizes against your old cartridge
- Third-party cartridges rely on the seller's fit statement
Limitations to weigh
- Specifications are the maker's or seller's own; check fit against your equipment's manual and part numbers.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Dimensions (seller) | 10.43 x 5.71 x 14.17 inches | Retailer |
|---|---|---|
| Product weight | 2.59 lb | Retailer |
| Model number | FWPFPRB25 | Retailer |
| Replaces | Unicel C-4326, FC-2370, 2 Pack | Retailer |
Alternatives worth comparing
More pool and spa filter cartridges we cover
- Cryspool 06008 Spa Filter Cartridge
- Cryspool cryspool 04075 Spa Filter Cartridge
- Pleatco PWW50P3 SPG Spa Filter Cartridge
- Macaberry PBF40M Spa Filter Cartridge
All pool and spa filter cartridges, compared in one table · Every Future Way product we cover
Final verdict
A solid spa cartridge for spas and hot tubs.
Where to buy
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