PRB25-IN / C-4326 / FC-2375
25 sq ft replacement filter cartridge • 5″ OD × 13.9375″ long
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Cross-Reference & Interchangeable Part Numbers
| Brand | Part Number | Type |
|---|---|---|
| Pleatco | PRB25-IN | Primary |
| Unicel | C-4326 | Equivalent |
| Filbur | FC-2375 | Equivalent |
| OEM | Beachcomber 3005845 | Original Equipment |
Always verify dimensions and end-cap type before purchasing a replacement.
Compatible Hot Tubs & Spas
The following spa models use the PRB25-IN (or an interchangeable equivalent). Always confirm with your owner's manual.
| Brand | Model |
|---|---|
| Beachcomber | All models 1994+ |
Frequently Asked Questions
What are the dimensions of the PRB25-IN?
The PRB25-IN measures 5 inches in outer diameter and 13.9375 inches in length, with a open top and open bottom. It provides 25 square feet of filtration area.
What other part numbers are interchangeable with the PRB25-IN?
The PRB25-IN is interchangeable with C-4326, FC-2375, and OEM equivalents including Beachcomber 3005845. Always verify dimensions and end-cap type before purchasing a replacement.
How often should I replace a PRB25-IN filter cartridge?
Pool and spa filter cartridges typically last 12–24 months under normal use, depending on bather load, chemical balance, and how often the filter is cleaned. Most manufacturers recommend inspecting the cartridge every 3–4 months and replacing it annually or when the pleats show signs of tearing, channeling, or cannot be fully cleaned.
How do I clean a PRB25-IN filter cartridge?
Remove the cartridge and rinse it with a garden hose, spraying at a 45-degree angle between the pleats from top to bottom. For a deeper clean, soak the cartridge overnight in a dedicated filter-cleaning solution, then rinse thoroughly. Never use a pressure washer as it damages the pleats. Allow the cartridge to dry completely before re-inserting if using a spare.
Which hot tubs and spas use the PRB25-IN filter?
The PRB25-IN is compatible with the following models: Beachcomber All models 1994+. Always cross-check your spa's owner manual or the label inside the filter compartment to confirm the correct part number.
Specifications
| Outer Diameter | 5″ |
|---|---|
| Length | 13.9375″ |
| Top Type | Open (no end cap) |
| Bottom Type | Open (no end cap) |
| Filtration Area | 25 sq ft |
| Primary Brand | Pleatco |
| Part Number | PRB25-IN |