Unicel 4CH-50 Replacement Filter Cartridge | 50 sq. ft. | Cone Handle / 1-1/2″ MPT
Original price was: $34.39.$17.42Current price is: $17.42.
10 in stock
Description
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 |
| Top Cap: molded cone handle | Bottom Cap: 1-1/2″ male thread/MPT |
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.)











