Keep your water cleaner with the Pleatco PRB35-IN Filter Cartridge - 35 sq ft.
 

 
This replacement filter is designed to support water filtration by helping capture debris, fine particles, hair, oils and other contaminants that can be found in spa water. A clean, well-maintained filter helps support proper water circulation, better filtration and clearer water.
 
The Pleatco PRB35-IN is a practical replacement option when your current filter is worn, damaged, saturated or no longer cleaning effectively. It is commonly used as a replacement equivalent for Unicel C-4335 and Filbur FC-2385, and is often associated with Dynamic Series IV, DFM, DFML and Waterway 35 In-Line systems.
 

 
Before purchasing, always verify your current filter’s dimensions, including length, outside diameter and the top and bottom openings.
 

 
Why Use It?
Helps capture debris and particles in the water
Supports better spa filtration
Helps keep water clearer and cleaner
Helps maintain proper water circulation
Practical replacement for a worn or saturated filter
Compatible with select systems using PRB35-IN, C-4335 or FC-2385
Ideal for regular spa maintenance
Pleatco is a trusted name in filter cartridges
 

 
Compatibility
Compatible with select spas using a Pleatco PRB35-IN style cartridge.
Common cross-references include Unicel C-4335 and Filbur FC-2385.
Often associated with Dynamic Series IV, DFM, DFML and Waterway 35 In-Line systems.
Always verify your old filter’s dimensions and part reference before purchasing.
 

 
Approximate Dimensions
Filter area: 35 sq ft
Outside diameter: 5 in.
Length: 9 1/4 in.
Top opening: 2 1/8 in.
Bottom opening: 2 1/8 in.
 

 
Recommended Use
Install the cartridge according to your spa or filter housing instructions.
Rinse the filter regularly with a garden hose to remove debris.
Deep clean with an appropriate filter cleaner as part of your maintenance routine.
Replace when the filter is worn, damaged or no longer cleans effectively.
Always maintain proper water balance and sanitizer levels.
 

 
Important
This filter helps support filtration, but it does not replace regular water care, water balancing or sanitizer. Always verify exact dimensions and compatibility before ordering. Filters are not returnable or exchangeable if the wrong model is ordered.
 

 
Size / Format
1 Pleatco PRB35-IN filter cartridge - 35 sq ft
 

 
Common Compatible References
Pleatco PRB35-IN
Unicel C-4335
Filbur FC-2385
Waterway 35 In-Line
Dynamic Series IV / DFM / DFML