Empty Refillable Cartridge 20" x 4.5" White
Empty Refillable Cartridge 20" x 4.5" White
Reusable canister for custom media applications in Big Blue housing systems
Fill It With What You Need
Reusable Design
Refill and reuse instead of replacing. The Watts RC-C-BB--20-50 accepts any granular or specialty media you need for custom filtration applications.
Big Blue Standard
Fits all standard 20" x 4.5" Big Blue housings. Direct replacement for any system using this size—no adapters or modifications needed.
155 Cubic Inch Capacity
Large internal volume holds enough media for effective treatment. Space for carbon, resin, specialty filtration media, or blended combinations.
Foam Pad Included
50 micron foam pad prevents media migration and channeling. Keeps your fill material contained and ensures even water distribution through the cartridge.
Fits Standard 20" Big Blue Housings
This empty refillable cartridge works with any standard 20" x 4.5" Big Blue filter housing. Compatible with Pentair, Pentek, Culligan, iSpring, and other manufacturers using the BB housing standard. The white body is food-grade and rated for potable water when filled with appropriate media.
What You Can Fill It With
Granular Activated Carbon
GAC for chlorine and VOC removal
Ion Exchange Resin
Softening or specialty resins
Calcite or Corosex
pH adjustment media
KDF Media
Heavy metal reduction
Specialty Blends
Custom combinations for specific contaminants
Cost Effective
Buy media in bulk and refill as needed instead of purchasing pre-filled cartridges
Application Specific
Tailor your filtration to your exact water chemistry with custom media loads
Easy to Refill
Simple screw-cap design allows quick media changes when performance drops
Empty Refillable Cartridge 20" x 4.5" White
Reusable canister for custom media applications in Big Blue housing systems
Fill It With What You Need
Reusable Design
Refill and reuse instead of replacing. The Watts RC-C-BB--20-50 accepts any granular or specialty media you need for custom filtration applications.
Big Blue Standard
Fits all standard 20" x 4.5" Big Blue housings. Direct replacement for any system using this size—no adapters or modifications needed.
155 Cubic Inch Capacity
Large internal volume holds enough media for effective treatment. Space for carbon, resin, specialty filtration media, or blended combinations.
Foam Pad Included
50 micron foam pad prevents media migration and channeling. Keeps your fill material contained and ensures even water distribution through the cartridge.
Fits Standard 20" Big Blue Housings
This empty refillable cartridge works with any standard 20" x 4.5" Big Blue filter housing. Compatible with Pentair, Pentek, Culligan, iSpring, and other manufacturers using the BB housing standard. The white body is food-grade and rated for potable water when filled with appropriate media.
What You Can Fill It With
Granular Activated Carbon
GAC for chlorine and VOC removal
Ion Exchange Resin
Softening or specialty resins
Calcite or Corosex
pH adjustment media
KDF Media
Heavy metal reduction
Specialty Blends
Custom combinations for specific contaminants
Cost Effective
Buy media in bulk and refill as needed instead of purchasing pre-filled cartridges
Application Specific
Tailor your filtration to your exact water chemistry with custom media loads
Easy to Refill
Simple screw-cap design allows quick media changes when performance drops
Original: $50.65
-65%$50.65
$17.73Description
Empty Refillable Cartridge 20" x 4.5" White
Reusable canister for custom media applications in Big Blue housing systems
Fill It With What You Need
Reusable Design
Refill and reuse instead of replacing. The Watts RC-C-BB--20-50 accepts any granular or specialty media you need for custom filtration applications.
Big Blue Standard
Fits all standard 20" x 4.5" Big Blue housings. Direct replacement for any system using this size—no adapters or modifications needed.
155 Cubic Inch Capacity
Large internal volume holds enough media for effective treatment. Space for carbon, resin, specialty filtration media, or blended combinations.
Foam Pad Included
50 micron foam pad prevents media migration and channeling. Keeps your fill material contained and ensures even water distribution through the cartridge.
Fits Standard 20" Big Blue Housings
This empty refillable cartridge works with any standard 20" x 4.5" Big Blue filter housing. Compatible with Pentair, Pentek, Culligan, iSpring, and other manufacturers using the BB housing standard. The white body is food-grade and rated for potable water when filled with appropriate media.
What You Can Fill It With
Granular Activated Carbon
GAC for chlorine and VOC removal
Ion Exchange Resin
Softening or specialty resins
Calcite or Corosex
pH adjustment media
KDF Media
Heavy metal reduction
Specialty Blends
Custom combinations for specific contaminants
Cost Effective
Buy media in bulk and refill as needed instead of purchasing pre-filled cartridges
Application Specific
Tailor your filtration to your exact water chemistry with custom media loads
Easy to Refill
Simple screw-cap design allows quick media changes when performance drops
