Unicel 4CH-50 Replacement Filter Cartridge | 50 sq. ft. | Cone Handle / 1-1/2" MPT
- In stock, ready to ship
- SKU:
- 4CH-50
-
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About This Item
The Unicel 4CH-50 is a 4000 Series 50 sq. ft. replacement spa filter cartridge engineered with a molded cone handle top and 1-1/2" male pipe thread (MPT) bottom — a precise dimensional match for the original. With 225 pleats of 3 oz. Reemay 2033 polyester media, the 4CH-50 delivers reliable particulate capture and consistent water clarity through each full filter cycle.
Specifications
| Filter Area | 50 sq. ft. |
| Length | 14 3/4" |
| Outer Diameter | 4 5/8" |
| Material | 3 oz. Reemay 2033 |
| Pleat Count | 225 |
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Top Cap: molded cone handle
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Bottom Cap: 1-1/2" male thread/MPT
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Note from Unicel: The 4CH-50 replaces cartridges that use a 1-1/2" MPT bottom fitting and match the dimensional envelope above (14 3/4" length × 4 5/8" OD). It can also be adapted to fit filter housings with a ~1.9" open-hole bottom using a separate disposable adapter (not included — verify compatibility with your filter housing before ordering).
Fits into:
| OEM Brand | Product Name | Part Number | Notes |
| Dimension One Spas | — | 1561-05 | — |
| Also compatible with select models from: Addison Spas, Advanced Spa Design, American Classic Spas, Aqua Tech Spas, Dynasty Spas, Florida Whirlpool, Nemco, OpuSpas | |||
(This is not an exhaustive list.)
