Unicel® C-2302 – 25 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-2302

$30.50

The Unicel® C-2302 replacement cartridge is designed for Rainbow and Waterway spa systems that use a 25 sq ft filter. Made with durable Reemay® polyester media, it offers excellent dirt-trapping performance and high water flow. With a closed top and 1-1/2" SAE threaded bottom, it fits easily into compatible filter housings. Replace your spa filter regularly to ensure clean, healthy water and optimal equipment performance.

Product Description

High-quality 25 square foot replacement filter cartridge designed for use in Rainbow and Waterway spa filtration systems.
Constructed with durable Reemay® spunbond polyester media for maximum filtration efficiency and water clarity.
Closed top design and 1-1/2" SAE threaded bottom ensure a snug, leak-free fit in compatible filter housings.
Measures 13-5/16" in length and 5" in outer diameter—ideal for compact spa filtration needs.
Improves spa water quality by removing dirt, debris, body oils, and other contaminants.
Helps extend the life of spa heaters, pumps, and plumbing by preventing clogs and buildup.
Easy to clean and reuse; replace every 12 months or sooner depending on spa use.
Manufactured by Unicel®, a trusted brand in spa and pool water filtration.

Product Specification

Brand	Unicel
SKU	C-2302
Dimensions	17.3 x 2.9 x 2.9 in
Barcode	678285120036
Weight	1.3 lb

Product Compatibility

2010 - 2024 Nordic Hot Tubs™ Bella
2010 - 2016 Nordic Hot Tubs™ Bella MS

Filter Dimensions

Diameter	2.875"
Length	17.0625"
Hole Size	1.0625"
Sq. Ft	15
Replacement(s)	Rainbow Hi Flow 14.5 \| PRB14.5 \| FC-2320 \| C-2302 \| 17-0051 \| 17-175-1578 \| APCC7038 \| APCC7018 \| PRB14.5-M \| SD-01034 \| 090164001432 \| C-2302AM \| C-2302RA \| FC-2320M \| 17-0051 (Antimicrobial) \| 20151M \| Pleatco PRB14.5-M \| Unicel C-2302AM \|

FAQ

Q: What spa brands use this filter?

A: This filter is commonly used in Rainbow and Waterway systems—check dimensions and threads for compatibility.

Q: How long does the filter last?

A: Typically 12 months, but replace sooner with heavy spa use or poor water conditions.

Q: Can I clean and reuse this filter?

A: Yes, rinse weekly and deep clean monthly to extend life.

Q: What type of connection does the bottom have?

A: It uses a 1-1/2" SAE threaded bottom fitting.

Q: Is this made with genuine Reemay® media?

A: Yes, it is manufactured by Unicel using high-quality Reemay® polyester.

Directions

Turn off the spa and open the filter housing.

Remove the old cartridge and dispose of it.

Rinse the new C-2302 cartridge thoroughly with a garden hose.

Insert the new filter into the housing and screw in the bottom connection.

Close the housing, restore power, and check for proper water flow.