PureT (UDF-20W-BP-EP) 20"x4.5" Empty Refillable Cartridge
PureT UDF-20W-BP-EP 20"×4.5" Empty Refillable Cartridge
Build your own custom filter. Dual-opening design with high-capacity screen for reduced pressure drop and extended run time.
Complete Control Over Your Filtration Media
Dual-Opening Design
Both ends unscrew for easy filling and cleaning. No wrestling with stuck caps or single-access frustration.
Custom Media Choice
Fill with KDF, GAC, catalytic carbon, bone char, ion exchange resin, or specialty blends for targeted contaminant removal.
High-Flow Screen
Oversized internal sediment screen resists clogging and maintains pressure better than standard mesh designs.
Reusable Housing
Refill indefinitely. Replace only the media, not the entire cartridge. Economical for experimental or specialty applications.
Fits Standard 20" Big Blue Housings
The PureT UDF-20W-BP-EP fits any standard 20-inch × 4.5-inch Big Blue filter housing. Common in whole-house systems, commercial pre-filtration, and specialty treatment trains. Verify housing dimensions before ordering.
Dimensions & Construction
| Model Number | UDF-20W-BP-EP |
| Dimensions | 20" × 4.5" |
| Opening | Dual-end (both caps unscrew) |
| Internal Screen | High-capacity sediment barrier |
| Material | Food-grade polypropylene |
| Media Capacity | Approx. 3.5 lbs (varies by media type) |
DIY Filtration
Experiment with custom media blends or rare adsorbents unavailable in pre-filled cartridges
Cost Effective
Buy bulk media and refill as needed instead of replacing entire cartridge assemblies
Less Waste
Reuse the housing indefinitely and discard only exhausted media
PureT UDF-20W-BP-EP 20"×4.5" Empty Refillable Cartridge
Build your own custom filter. Dual-opening design with high-capacity screen for reduced pressure drop and extended run time.
Complete Control Over Your Filtration Media
Dual-Opening Design
Both ends unscrew for easy filling and cleaning. No wrestling with stuck caps or single-access frustration.
Custom Media Choice
Fill with KDF, GAC, catalytic carbon, bone char, ion exchange resin, or specialty blends for targeted contaminant removal.
High-Flow Screen
Oversized internal sediment screen resists clogging and maintains pressure better than standard mesh designs.
Reusable Housing
Refill indefinitely. Replace only the media, not the entire cartridge. Economical for experimental or specialty applications.
Fits Standard 20" Big Blue Housings
The PureT UDF-20W-BP-EP fits any standard 20-inch × 4.5-inch Big Blue filter housing. Common in whole-house systems, commercial pre-filtration, and specialty treatment trains. Verify housing dimensions before ordering.
Dimensions & Construction
| Model Number | UDF-20W-BP-EP |
| Dimensions | 20" × 4.5" |
| Opening | Dual-end (both caps unscrew) |
| Internal Screen | High-capacity sediment barrier |
| Material | Food-grade polypropylene |
| Media Capacity | Approx. 3.5 lbs (varies by media type) |
DIY Filtration
Experiment with custom media blends or rare adsorbents unavailable in pre-filled cartridges
Cost Effective
Buy bulk media and refill as needed instead of replacing entire cartridge assemblies
Less Waste
Reuse the housing indefinitely and discard only exhausted media
Description
PureT UDF-20W-BP-EP 20"×4.5" Empty Refillable Cartridge
Build your own custom filter. Dual-opening design with high-capacity screen for reduced pressure drop and extended run time.
Complete Control Over Your Filtration Media
Dual-Opening Design
Both ends unscrew for easy filling and cleaning. No wrestling with stuck caps or single-access frustration.
Custom Media Choice
Fill with KDF, GAC, catalytic carbon, bone char, ion exchange resin, or specialty blends for targeted contaminant removal.
High-Flow Screen
Oversized internal sediment screen resists clogging and maintains pressure better than standard mesh designs.
Reusable Housing
Refill indefinitely. Replace only the media, not the entire cartridge. Economical for experimental or specialty applications.
Fits Standard 20" Big Blue Housings
The PureT UDF-20W-BP-EP fits any standard 20-inch × 4.5-inch Big Blue filter housing. Common in whole-house systems, commercial pre-filtration, and specialty treatment trains. Verify housing dimensions before ordering.
Dimensions & Construction
| Model Number | UDF-20W-BP-EP |
| Dimensions | 20" × 4.5" |
| Opening | Dual-end (both caps unscrew) |
| Internal Screen | High-capacity sediment barrier |
| Material | Food-grade polypropylene |
| Media Capacity | Approx. 3.5 lbs (varies by media type) |
DIY Filtration
Experiment with custom media blends or rare adsorbents unavailable in pre-filled cartridges
Cost Effective
Buy bulk media and refill as needed instead of replacing entire cartridge assemblies
Less Waste
Reuse the housing indefinitely and discard only exhausted media
