Unicel C-4301 Replacement Filter Cartridge | 27.5 sq. ft. | Martec / Sonfarrel / Nordic
Regular price$31.99
$9.99 flat shipping on orders under $100.
Unicel Authorized Dealer
Full Manufacturer Warranty Support
Free Shipping
On this item
No Hassle Returns
30 Days Paid Returns
- In stock, ready to ship
- SKU:
- C-4301
-
Poolaroo Promise
- Fast Shipping — Ships in 1–2 Business Days
- 30-Day Risk-Free Returns — We Pay Return Shipping, No Restocking Fees
- Powered By People Who Care - No Faceless Conglomerate
About This Item
The Unicel C-4301 is a 4000 Series 27.5 sq. ft. replacement filter cartridge engineered for compact spa and pool filtration systems. With 106 precision-set pleats of 3 oz. Reemay 2033 polyester media, this cartridge delivers reliable water clarity and extended service life in a tight 14 7/8" profile — purpose-built for the spa systems it was designed to replace.
Specifications
| Filter Area | 27.5 sq. ft. |
| Length | 14 7/8" |
| Outer Diameter | 4 15/16" |
| Top Inner Diameter | 2 1/8" |
| Bottom Inner Diameter | 2 1/8" |
| Material | 3 oz. Reemay 2033 |
| Pleat Count | 106 |
|
Top Cap: Open
|
Bottom Cap: Open
|
Fits Into:
| OEM Brand | Product Name | Part Number | Notes |
| Martec | — | CL-2800 | — |
| Martec | — | CL-2200 | — |
| Advantage Mfg. | — | ELE-25 (top load) | — |
| Sonfarrel | — | 220122, 220128, 220132 | — |
| Nordic Hot Tubs | — | — | Models manufactured before July 1999 only |
| Thermo Spas of Connecticut | — | — | — |
(This is not an exhaustive list.)
⚠️ IMPORTANT: NORDIC HOT TUBS COMPATIBILITY
The C-4301 is compatible with Nordic Hot Tubs models manufactured before July 1999 only. If your Nordic Hot Tub was built after this date, this cartridge may not be the correct replacement. Verify your model's manufacture date before ordering.
Also known as: C4301
