Keep your water cleaner with the Pleatco PCST80 Filter Cartridge - 100 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 PCST80 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-5396, C-5396RA, Filbur FC-2975 and FC-2975M.
 

 
This model is often associated with select Coast Spas Top Load / In-Line 100 and Waterway Plastics 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
100 sq ft filtration area
Helps maintain proper water circulation
Practical replacement for a worn or saturated filter
Compatible with select systems using PCST80, C-5396 or FC-2975
Ideal for regular spa maintenance
Pleatco is a trusted name in filter cartridges
 

 
Compatibility
Compatible with select spas using a Pleatco PCST80 style cartridge.
Commonly associated with Coast Spas Top Load / In-Line 100 and Waterway Plastics systems.
Common cross-references include Unicel C-5396, Unicel C-5396RA, Filbur FC-2975 and Filbur FC-2975M.
Always verify your old filter’s dimensions, openings and part reference before purchasing.
 

 
Approximate Dimensions
Filter area: 100 sq ft
Outside diameter: 5 3/8 in.
Length: 21 5/16 in.
Top opening: 2 1/8 in.
Bottom opening: 2 1/8 in.
Filter media: Pleatco pleated filtration fabric
 

 
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 PCST80 filter cartridge - 100 sq ft
 

 
Common Compatible References
Pleatco PCST80
Pleatco PCST80-M
Unicel C-5396
Unicel C-5396RA
Filbur FC-2975
Filbur FC-2975M
Coast Spas Top Load / In-Line 100