Unicel Replacement Filter Cartridge for Marquis Spa 35 sq. ft. | C-5423
Regular price$35.99
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- SKU:
- C-5423
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About This Item
The Unicel C-5423 is a precision-engineered 35 sq. ft. replacement filter cartridge built for Marquis Spa filter systems. With 158 pleats of 3 oz. Reemay 2033 polyester media, this cartridge delivers exceptional surface area and dirt-holding capacity — keeping your spa water clean and your pump running efficiently between service intervals.
⚠️ IMPORTANT: Upgraded Replacement Cartridge
According to Unicel, the original filter for this system was rated at 25 sq. ft. (115 pleats). The C-5423 is the current production replacement and has been upgraded to 35 sq. ft. — providing significantly more filtration surface area in the same housing footprint.
Specifications
| Filter Area | 35 sq. ft. |
| Length | 11 15/16" |
| Outer Diameter | 5 3/16" |
| Top Inner Diameter | N/A |
| Bottom Inner Diameter | 1 5/8" |
| Material | 3 oz. Reemay 2033 |
| Pleat Count | 158 |
|
Top Cap: closed
|
Bottom Cap: open
|
Fits into:
| OEM Brand | Product Name | Part Number | Notes |
| Amish Country | — | — | New design; product has a closed top. |
| Marquis Spas | — | 20045 | — |
| Marquis Spas | — | 370-0215 | — |
Also known as: C5423
