Listing we opened and checked. Match the diameter, length and both fittings on this page before you order. The price is on Amazon; we do not print one.
100533 spa filter equivalents
Part number 100533 appears in 2 cross-reference rows below. Each row lists the OEM, Unicel and Pleatco numbers that the source documents treat as interchangeable, plus the cartridge size so you can confirm against your old filter.
The same numbers, on one page, are in the cross-reference lookup. A schedule for this part number, and the buy link, are on the replacement schedule and reorder page. Published intervals by brand are in the replace and clean calculator.
Coleman Spas C-4950 cartridge (OEM 100533), 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft. Unicel C-4950, Pleatco PRB50-IN.
Unicel C-4950
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. Check price on Amazon opens the Unicel C-4950 listing we checked. These are affiliate links. Product photos are omitted unless Amazon supplied one through the Product Advertising API or a SiteStripe image link. Verify dimensions before ordering. See our affiliate disclosure.
| OEM | 100533 |
|---|---|
| Unicel | C-4950 |
| Pleatco | PRB50-IN |
| Filbur | FC-2390 |
| Size | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft |
Sources
- Unicel 2026 Replacement Guide: Coleman OEM block PDF p.32: 100533 and 3301-2145 = C-4950, 50 sq ft, 4-15/16" x 13-5/16". Maax Spas of AZ, PDF p.44, repeats OEM 100533 with no model name. (PDF)
- Pleatco 2023 Catalog: Spec table PDF p.32: PRB50-IN lists OEM 100533, 5" OD, 50 sq ft (PDF)
- Filbur Catalog & Reference Guide: Coleman Spas section PDF p.16: FC-2390, OEM 100533, PRB50-IN, C-4950, 50 sq ft (PDF)
Not in sources: Outside diameter 4-15/16" (Unicel and Filbur) versus 5" (Pleatco). No model name on the Coleman row or the Maax row..
Full details → · All Coleman Spas spa filters · Which fitting you need · How to install it
Maax Spas C-4950 cartridge (OEM 100533), 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft. Unicel C-4950, Pleatco PRB50-IN.
Unicel C-4950 Listing we opened and checked. Match the diameter, length and both fittings on this page before you order. The price is on Amazon; we do not print one.
| OEM | 100533 |
|---|---|
| Unicel | C-4950 |
| Pleatco | PRB50-IN |
| Filbur | FC-2390 |
| Size | 4-15/16" (125 mm) × 13-5/16" (338 mm), 50 sq ft |
Sources
- Unicel 2026 Replacement Guide: Maax Spas of AZ PDF p.44: 100533 = C-4950, 50 sq ft, 4-15/16" x 13-5/16", no model name. The heading says see also Coleman Spas. (PDF)
- Pleatco 2023 Catalog: Spec table PDF p.32: PRB50-IN includes OEM 100533 (PDF)
- Filbur Catalog & Reference Guide: Coleman Spas section PDF p.16: FC-2390, OEM 100533, C-4950. No separate Maax heading for this OEM. (PDF)
Not in sources: No model name. Outside diameter 4-15/16" versus Pleatco's 5". The 3301-2145 twin is on the Coleman row only..
Full details → · All Maax Spas spa filters · Which fitting you need · How to install it