Description
Unicel C-9650 Replacement Cartridge Filter – 50 Sq Ft (For Jacuzzi CFR-50 / CFT-50)
The Unicel C-9650 is a high-quality 50 sq ft replacement cartridge designed for select Jacuzzi pool/spa cartridge filter systems, commonly used with Jacuzzi CFR-50 and CFT-50 applications. It features open (no-cap) ends with different inside diameters, making it important to match measurements to your existing cartridge.
Key Features
- 50 sq ft filtration area for strong water clarity and consistent flow
- Durable pleated media designed to capture fine debris and extend time between cleanings
- Open top and open bottom end caps for the correct fit on compatible Jacuzzi canisters
- Direct-fit replacement when matched by part number and dimensions
Specifications
- Part Number: C-9650
- Filtration Area: 50 sq ft
- Outside Diameter: 9-15/16″ (9.9375″)
- Length: 10″
- Top End Cap: Open
- Top Inside Diameter: 5-13/16″ (5.8125″)
- Bottom End Cap: Open
- Bottom Inside Diameter: 6-1/16″ (6.0625″)
- Pleat Count: 194
Replaces / Compatible With
- Jacuzzi: CFR-50 / CFT-50 (commonly referenced OEM cartridge: 42-2940-09-R)
- Pleatco: PJ50-4
- Filbur: FC-1460
When to Replace
- Filter pressure rises quickly after cleaning or circulation feels restricted
- Cartridge pleats are torn, flattened, or the end caps are cracked/warped
- Water stays cloudy even with proper chemistry and regular cleaning
- Cartridge is no longer cleaning up well after a deep soak and thorough rinse
Related Products
- Cartridge Filter Cleaner
- Filter Tank O-Rings & Gaskets
- Filter Pressure Gauges
- Cartridge Cleaning Tools
- Pleatco PJ50-4 (Alternate Cartridge)
- Filbur FC-1460 (Alternate Cartridge)
Maintenance Tips
- Rinse the cartridge when pressure rises about 8–10 PSI above your clean starting pressure (or when flow drops).
- For best results, rotate between two cartridges (one in service, one drying after cleaning) to extend overall cartridge life.
- Deep clean periodically with a cartridge cleaner to remove oils and fine debris; rinse thoroughly before reinstalling.
- Keep water chemistry balanced—high calcium and extreme pH can shorten cartridge life and cause premature clogging.
