Empty Refillable Cartridge 20"x 2.5" Clear
RC-W-20 Empty Refillable Cartridge 20" x 2.5"
Clear housing design lets you customize your filtration media for specialized water treatment applications
The Watts RC-W-20 empty filter cartridge gives you complete control over your filtration strategy. This 20" x 2.5" clear housing accepts any granular or powdered media, making it ideal for specialty applications like iron reduction, acid neutralization, arsenic removal, or custom blends that pre-filled cartridges can't deliver.
Cartridge Details
| Model Number | Watts RC-W-20 |
| Dimensions | 20" length x 2.5" diameter |
| Housing Material | Clear polypropylene |
| End Caps | Standard 20" cartridge fitting |
| Media Capacity | User-defined based on fill media |
| Reusability | Refillable and cleanable |
Why Choose Refillable Cartridges
Custom Media Flexibility
Fill with KDF-55, bone char, activated alumina, calcite, ion exchange resin, or specialty blends tailored to your exact water chemistry needs
Clear Housing Design
Monitor media condition and flow performance visually without disassembly, catching channeling or media breakdown early
Cost-Effective Refills
Buy bulk filtration media and refill cartridges as needed instead of replacing entire sealed units every cycle
Standard 20" Fit
Drop-in replacement for any standard 20-inch filter housing with 2.5-inch cartridge diameter compatibility
Specialty Applications
Perfect for well water iron removal, pH adjustment, heavy metal adsorption, or experimental filtration setups
Sustainable Solution
Reduce plastic waste by reusing the same cartridge body across multiple media changes and service intervals
System Integration
The Watts RC-W-20 refillable cartridge fits all standard 20-inch filter housings with 2.5-inch diameter cartridge slots. Compatible with whole house systems, commercial pre-treatment setups, and point-of-entry filtration stages. Use with Big Blue housings, commercial stainless steel vessels, or any housing rated for 20" x 2.5" cartridges. Ideal for well water remediation, aquaculture filtration, laboratory water prep, and custom blended media applications where off-the-shelf cartridges fall short.
Watts has been engineering reliable filtration components for residential and commercial applications for decades, trusted by installers who need components that work.
RC-W-20 Empty Refillable Cartridge 20" x 2.5"
Clear housing design lets you customize your filtration media for specialized water treatment applications
The Watts RC-W-20 empty filter cartridge gives you complete control over your filtration strategy. This 20" x 2.5" clear housing accepts any granular or powdered media, making it ideal for specialty applications like iron reduction, acid neutralization, arsenic removal, or custom blends that pre-filled cartridges can't deliver.
Cartridge Details
| Model Number | Watts RC-W-20 |
| Dimensions | 20" length x 2.5" diameter |
| Housing Material | Clear polypropylene |
| End Caps | Standard 20" cartridge fitting |
| Media Capacity | User-defined based on fill media |
| Reusability | Refillable and cleanable |
Why Choose Refillable Cartridges
Custom Media Flexibility
Fill with KDF-55, bone char, activated alumina, calcite, ion exchange resin, or specialty blends tailored to your exact water chemistry needs
Clear Housing Design
Monitor media condition and flow performance visually without disassembly, catching channeling or media breakdown early
Cost-Effective Refills
Buy bulk filtration media and refill cartridges as needed instead of replacing entire sealed units every cycle
Standard 20" Fit
Drop-in replacement for any standard 20-inch filter housing with 2.5-inch cartridge diameter compatibility
Specialty Applications
Perfect for well water iron removal, pH adjustment, heavy metal adsorption, or experimental filtration setups
Sustainable Solution
Reduce plastic waste by reusing the same cartridge body across multiple media changes and service intervals
System Integration
The Watts RC-W-20 refillable cartridge fits all standard 20-inch filter housings with 2.5-inch diameter cartridge slots. Compatible with whole house systems, commercial pre-treatment setups, and point-of-entry filtration stages. Use with Big Blue housings, commercial stainless steel vessels, or any housing rated for 20" x 2.5" cartridges. Ideal for well water remediation, aquaculture filtration, laboratory water prep, and custom blended media applications where off-the-shelf cartridges fall short.
Watts has been engineering reliable filtration components for residential and commercial applications for decades, trusted by installers who need components that work.
Original: $30.46
-65%$30.46
$10.66Description
RC-W-20 Empty Refillable Cartridge 20" x 2.5"
Clear housing design lets you customize your filtration media for specialized water treatment applications
The Watts RC-W-20 empty filter cartridge gives you complete control over your filtration strategy. This 20" x 2.5" clear housing accepts any granular or powdered media, making it ideal for specialty applications like iron reduction, acid neutralization, arsenic removal, or custom blends that pre-filled cartridges can't deliver.
Cartridge Details
| Model Number | Watts RC-W-20 |
| Dimensions | 20" length x 2.5" diameter |
| Housing Material | Clear polypropylene |
| End Caps | Standard 20" cartridge fitting |
| Media Capacity | User-defined based on fill media |
| Reusability | Refillable and cleanable |
Why Choose Refillable Cartridges
Custom Media Flexibility
Fill with KDF-55, bone char, activated alumina, calcite, ion exchange resin, or specialty blends tailored to your exact water chemistry needs
Clear Housing Design
Monitor media condition and flow performance visually without disassembly, catching channeling or media breakdown early
Cost-Effective Refills
Buy bulk filtration media and refill cartridges as needed instead of replacing entire sealed units every cycle
Standard 20" Fit
Drop-in replacement for any standard 20-inch filter housing with 2.5-inch cartridge diameter compatibility
Specialty Applications
Perfect for well water iron removal, pH adjustment, heavy metal adsorption, or experimental filtration setups
Sustainable Solution
Reduce plastic waste by reusing the same cartridge body across multiple media changes and service intervals
System Integration
The Watts RC-W-20 refillable cartridge fits all standard 20-inch filter housings with 2.5-inch diameter cartridge slots. Compatible with whole house systems, commercial pre-treatment setups, and point-of-entry filtration stages. Use with Big Blue housings, commercial stainless steel vessels, or any housing rated for 20" x 2.5" cartridges. Ideal for well water remediation, aquaculture filtration, laboratory water prep, and custom blended media applications where off-the-shelf cartridges fall short.
Watts has been engineering reliable filtration components for residential and commercial applications for decades, trusted by installers who need components that work.
