Compatible with Unicel
4CH-20
Hot Tub Filter Cartridge, 20 Sq Ft, 4-5/8 x 6-3/4 In., Replacement for Unicel 4CH-20, Pleatco PHC25P4, Filbur FC-0125
Also sold as
Your number not here? Send it to us and we'll confirm the match.
OEM numbers listed for fitment identification only.
Specifications
| Compatible brand | Unicel |
|---|---|
| Category | Hot Tub & Spa Filters |
| Lead time | 15–25 days after order confirmation |
- MOQ 50 pcs · samples from 1
- Private label available
- Ships from our factory
Request wholesale quote
One request covers the whole list — no need to send them one by one.
Tiered pricing available above 1,000 pcs · OEM packaging available
Product overview
4CH-20 is an aftermarket pleated hot tub filter cartridge, 4-5/8 in. in diameter and 6-3/4 in. long, with 20 sq ft of filter area. Top: molded cone handle. Bottom: 1-1/2" male thread/MPT.
It interchanges with Pleatco PHC25P4 and Filbur FC-0125.
Pleatco lists PHC25P4 as discontinued in its 2025-26 catalog. This cartridge keeps the original 4-5/8 x 6-3/4 in. size, so it drops into the same filter housing.
OEM cartridges it replaces: Saratoga Spas 20241-238; Vita Spas PVT 25.
Fitment notes: Replaces any cartridge that has an MPT fitting or a 1.9" id w/ disposable adapter. Vita Spas: Remove "pad adapter" from the skimmer before threading Unicel MPT directly into the suction fitting.
Before ordering, measure the old cartridge — overall length, outside diameter and both end fittings. Some catalogs quote the length of threaded top-load cartridges with the thread and some without, so a quarter-inch difference between listings is common. We supply spa service companies, dealers and online retailers: MOQ 50 pcs per part, mixed cartons welcome, and single samples to confirm fit before a production order.
Fits these systems
Hot tubs and spas from Master Spas, Saratoga Spas, Softub, Vita Spas.
Not sure it fits? Send us a photo of your part and we'll confirm. Send a photo
Often sourced together
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Fits Pleatco
Hot Tub Filter Cartridge, 42 Sq Ft, 5-3/16 x 12-1/2 In., Replacement for Pleatco PCAL42-F2M
Fits Pleatco
Hot Tub Filter Cartridge, 45 Sq Ft, 8-1/2 x 10-9/16 In., Replacement for Pleatco PWK45N, Filbur FC-3929
Fits Pleatco
Hot Tub Filter Cartridge, 18 Sq Ft, 6-5/8 x 6-1/4 In., Replacement for Pleatco PBF17Sourcing questions
What OEM numbers does 4CH-20 replace?
POOLPOINT 4CH-20 is an aftermarket replacement cross-referenced to 20241-238, FC-0125, PHC25P4 and PVT 25. Those numbers identify fitment only — the part is manufactured by POOLPOINT, not by Unicel.
Is 4CH-20 a genuine Unicel part?
No. POOLPOINT manufactures compatible aftermarket replacement parts. We are not affiliated with, sponsored by or endorsed by Unicel; the brand name and OEM numbers are used to identify fitment only.
What is the minimum order quantity for 4CH-20?
MOQ is 50 pcs per part, and mixed cartons are welcome to reach the order minimum. Samples are a separate case — we supply single pieces so you can confirm fitment before committing to a production run.
4CH-20
Hot Tub Filter Cartridge, 20 Sq Ft, 4-5/8 x 6-3/4 In., Replacement for Unicel 4CH-20, Pleatco PHC25P4, Filbur FC-0125