The 20" x 4.5" Empty Refillable Filter Cartridge REC-4520W is an environmentally friendly alternative to water filtration that is reusable. Recycle, Refill, Reuse. Stop throwing away plastic and filling up landfills. The REC-4520W can be filled with a variety of medias: calcite for pH adjustment, activated carbon for taste and odor improvement, softening or mixed bed ion exchange resins, and other medias. When the media is exhausted, simply discard the old media and refill the cartridge with new media. These cartridges come standard with built-in pre and post filters to keep the media from being washed out of the filter cartridge. Note: 
The cap color of the housing may vary between blue, white, or turquoise. 
 

Features:

• Refillable Empty Cartridges
• Durable Construction
• Excellent Flow Rate
• Prefilter and Postfilter: 20 micron polypropylene pad
• Reusable and environmentally friendly option

Specifications: 

• Approx. Volume: 0.16 cubic feet of media
• Color/Finish: White
• Gaskets: Buna-N

Suggested granular activated carbon for the REC-4520W
Use the Neo-Pure GAC-4PK Coconut Shell GAC Pillow Packs to conveniently refill a reusable filter cartridge and save the environment by not discarding plastic.

NOTE: All cartridges are available in either white or clear. The "W" or "C" suffix on the part number denotes whether the cartridge is either "white" or "clear".