5-5/8" × 6"
Maax Spas spa filters
Unicel’s Maax Spas of AZ list puts Elegant, Intrigue and Joli on OEM 108868 (5CH-25, 25 sq ft) and Elite Spas on OEM 104309 (5CH-35). The spec table rates that Elite cartridge at 35 sq ft. A separate Unicel heading, Elite Spas by Maax, rates the same diameter and length at 50 sq ft and prints no OEM.
Pleatco’s cross-reference sends 5CH-35 to PMAX50P4, a 50 sq ft Maax-of-Canada cartridge, while its Elite spec row is PAS35P4 at a different size and 35 sq ft. Filbur’s FC-0300 is the 35 sq ft size. The model list and that conflict are on the Maax filter page.
This page lists 6 Maax Spas replacement cartridges from the Unicel 2026 Replacement Guide, the Pleatco 2023 catalog and the Filbur catalog, plus model and model-year fitment for 2 of them (4 hot tub models in total). 5 have a Filbur number. Find your spa filter by the OEM part number on the end cap, or measure it and compare sizes below.
Clean and replace intervals for one cartridge on this list, plus the cross-reference numbers and a buy link: filter replacement schedule and reorder.
- 1088685CH-25, 5-5/8" (143 mm) × 6" (152 mm)See replacement
- 1043095CH-35, 5-5/8" (143 mm) × 8" (203 mm)See replacement
- 100533C-4950, 4-15/16" (125 mm) × 13-5/16" (338 mm)See replacement
- 107092C-5374, 5-5/16" (135 mm) × 14-13/16" (376 mm)See replacement
- 100593C-8450, 8" (203 mm) × 9" (229 mm)See replacement
- 100594C-8475, 8" (203 mm) × 13" (330 mm)See replacement
| Cartridge | Unicel | Pleatco | Filbur | Size | Fits | Status |
|---|---|---|---|---|---|---|
| 108868 | 5CH-25 | PMAX25P4 | not listed | 5-5/8" (143 mm) × 6" (152 mm), 25 sq ft | 3 models | verified |
| 104309 | 5CH-35 | PMAX50P4 | FC-0300 | 5-5/8" (143 mm) × 8" (203 mm), 35 sq ft | 1 model | verified |
| 100533 | C-4950 | PRB50-IN | FC-2390 | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft | not listed | verified |
| 107092 | C-5374 | PLBS75 | FC-2971 | 5-5/16" (135 mm) × 14-13/16" (376 mm), 65 sq ft | not listed | verified |
| 100593 | C-8450 | PCS50N | FC-3310 | 8" (203 mm) × 9" (229 mm), 50 sq ft | not listed | verified |
| 100594 | C-8475 | PCS75N | FC-3320 | 8" (203 mm) × 13" (330 mm), 75 sq ft | not listed | verified |
Know your model but not the part number? See Maax Spas filter by model and year.
Brands that share cartridges with Maax Spas
- Coleman Spas, same part numbers C-4950, C-8450, C-8475
- Cal Spas, same part numbers C-4950, C-5374
- Beachcomber, same part number C-4950
- Bullfrog, same part number C-4950
- Caldera, same part number C-4950
Guides that apply to Maax Spas
- Coleman part numbers, including the OEMs this list shares
- Why one Unicel number can be printed at 35 and at 50 sq ft
- Open-end vs threaded hot tub filters
- How Filbur, Unicel and Pleatco numbers compare
- How to find your spa filter size
- How to install a cartridge
- All guides
Search Maax Spas part numbers on Amazon
Each button opens an Amazon search for that part number. The cartridge page is where the cited size and fittings are. Match those before you buy.
Part numbers from this table
-
5CH-25 cartridge (OEM 108868) -
5CH-35 cartridge (OEM 104309) 5-5/8" × 8"
-
C-4950 cartridge (OEM 100533) 4-15/16" × 13-5/16"
-
C-5374 cartridge (OEM 107092) 5-5/16" × 14-13/16"
Disclosure: we may earn a commission from qualifying purchases made through retailer links on this site, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Amazon links on this page go to Amazon.com and are affiliate links; they never change what we write, and the list is not ranked by commission. Each “Search on Amazon” button opens an Amazon search for the part or product name shown, not a single listing we pre-checked. Check size, quantity and your spa maker’s guidance before you buy. See our affiliate disclosure.
Model-year fitment comes only from the sources named on each cartridge page. Where no source lists models or years, the page says so.