---
product_id: 30743711
title: "CuZn - Refillable Empty Water Filter Cartridge, 2.5\"D x 10\"H - CLEAR, Compatible With 10\" Slimline Type Filter Housings"
brand: "cuzn"
price: "€ 33.00"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/30743711-cuzn-refillable-empty-water-filter-cartridge-2-5d-x-10h
store_origin: FI
region: Finland
---

# CuZn - Refillable Empty Water Filter Cartridge, 2.5"D x 10"H - CLEAR, Compatible With 10" Slimline Type Filter Housings

**Brand:** cuzn
**Price:** € 33.00
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** CuZn - Refillable Empty Water Filter Cartridge, 2.5"D x 10"H - CLEAR, Compatible With 10" Slimline Type Filter Housings by cuzn
- **How much does it cost?** € 33.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/30743711-cuzn-refillable-empty-water-filter-cartridge-2-5d-x-10h)

## Best For

- cuzn enthusiasts

## Why This Product

- Trusted cuzn brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Manufactured by the most trusted brand in the industry, CuZn Water Filtration Systems (est. 1987). Theses cartridge are compliant with NSF 61 Standards for use in potable & non potable water filtration systems. Materials of Construction- End Caps: High Impact Polystyrene, Body: High Impact Polystyrene, Resin: Tairirex Polystyrene.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polystyrene |
| Product Dimensions | 2.5"D x 2.5"W x 10"H |
| External Testing Certification | NSF |
| Product Benefits | Removes Impurities, Make Your Own Water Filter Using CuZn's Empty Refillable Water Filter Housings |
| Brand | CuZn |
| Unit Count | 1.0 Count |
| Part Number | Empty Cartridge |
| Item Weight | 8 ounces |
| Item model number | Empty Cartridge |
| Is Discontinued By Manufacturer | No |
| Size | 2.5"D x 10"H |
| Color | Clear Housing |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![CuZn - Refillable Empty Water Filter Cartridge, 2.5"D x 10"H - CLEAR, Compatible With 10" Slimline Type Filter Housings - Image 1](https://m.media-amazon.com/images/I/41+8homSDSL.jpg)
![CuZn - Refillable Empty Water Filter Cartridge, 2.5"D x 10"H - CLEAR, Compatible With 10" Slimline Type Filter Housings - Image 2](https://m.media-amazon.com/images/I/61YlbvnMMTL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: How much media should I expect to fill these? Such as kdf and carbon.**
A: Granular KDF Media is 171 Pounds Per Cubic Foot, Reticulated KDF Cubes are 22 Pounds Per Cubic Foot & Granular Activated Carbon is 20 Pounds Per Cubic Foot. A Cubic Foot = 1728 Cubic Inches of Media. An empty 2.5" x 10" Slimline Cartridge holds approx. 58.5 cubic inches of media, a 4.5" x 10" cartridge holds 135 cubic inches of media & a 4.5" x 20" cartridge hold 270 cubic inches of media. Please don't hesitate to give us a call if you have any additional questions! Thank you, Chris @ CuZn Water & Air Filters 800.345.PURE (7873)Phone Support: 8am-5:30pm est, M-F

**Q: I'm not sure the faqs answered my question - I need to replace my housing that holds 4.5" x 20" filters - will this housing work?**
A: This listing is for cartridges that go inside the water filtration system housing. Please do give us a call if you'd like to discuss this further. Chris @ CuZn Water & Air Filters800.345.PURE (7873)Phone Support: 8:00am - 5:30pm est, M-F

**Q: Which deionizing resin would you recommend for this filter? I want to use for spotless rinse on car.**
A: Hello, great question, thanks for inquiring with us! A 20" Big Blue Housing w/ Clear 4.5" x 20" Empty Refillable Cartridge and 5lbs of Resintech's DI Resin (search ASIN# B000X92KOC on Amazon to locate) should be a solid spot free rinsing system for you. You'll need to pick up some fittings for the Inlet & Outlet of your big blue housing at the hardware store for connecting a garden hose to the inlet/outlet ports of that housing. Please let us know if you have any additional questions! (contact info below)
Thank you, 
Chris @ CuZn Water & Air Filters 
800.345.PURE (7873)
Phone Support: 8am - 5:30pm est, M-F

**Q: Can this be filled with my own choice of GAC?**
A: Hey Jeffrey, thanks for checking in! Yes, these empty cartridges are designed to be filled with the filtration media of your choice, GAC is a common choice. They come with a particulate pad, twist off cap & heat seal wrap for packaging and resale as a complete product. Please let us know if you have any additional questions! Chris @ CuZn Water & Air Filters800.345.PURE (7873)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Refillable canisters do not pass water out the top.
  

*by S***R on Reviewed in the United States on October 19, 2019*

Edit:  To make a long story short, if your municipal supply or plumbing  has sediment and you don't pre-filter for it, refillable canisters will eventually clog.  Not sure why the ones I received were already clogged.When my CuZn cartridges would not flow water, I tried a couple of other brands and they worked better.  However, as it turns out, the CuZn cartridges have replaceable pads at the top and bottom.  The other brands I use must be discarded after being clogged.  They have some sort of spun filter fused to the cap that not only makes you have to buy a new one down the road, it also lowers the amount of media you can pack.  I bag my media (some is reusable and I 3-stack), and that makes the other brands that much more of a packing problem.The CuZn filters have a plastic grid trapping a stainless steel mesh that sits over the pad at each end.  You can remove the grid with a little effort and the mesh and pad are freed.  I pulled those out and replaced the plastic grid.  Best flow I have ever had.  I am going to put the stainless steel mesh back as it was only the pad that was the problem and the mesh is coarse.  Anyway, 5 stars for having the best  product for most applications (despite having to modify for my application) and for their tenacious customer service.Original Review:The refillable canisters I received turned out to be watertight on the output.  Drove me crazy troubleshooting plumbing, etc., changing media, reducing media, and so on.  Finally decided to leave the canisters empty and get help, but no flow through the empty canisters!  Took them out and tops are water tight.  Never heard of such a thing.  Have to remove the caps for water to come out the top or let water trickle out the bottom for 5 minutes.Bad batch of canisters?!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A "CLEAR" winner!
  

*by T***S on Reviewed in the United States on December 30, 2016*

Just redid my whole house "Big Blue" 20 inch system which had consisted of two Big Blue 20"x4.5" housings: one for a sediment filter, other for a ph filter.  My original housings were blue in color, which I always thought was stupid because you can't see inside the housing.  So I found Big Blue compatible CLEAR housings (on Amazon) and ordered them, then found this CLEAR refillable cartridge which I'm using to correct my acidic water's ph.  So now I can clearly see the remaining level of calcite/magnesium in the ph filter, as well as see the color of the sediment filter so I'll know when to replace each.  This refillable housing is just what I was looking for.  And it is rugged and well built.  Previous refillable ph filter I had was a white plastic, flimsy plastic thing that cracked along the side.  But since it was hidden inside a blue housing, I had no idea of the damage.  I searched quite a bit for a CLEAR filter cartridge before I stubled onto this product from CuZn.  I did not come across any competing products...  Again, I give this item 5 stars for it's ruggedness, build quality and price!  I'll try to remember to update this review in a few months after I have to refill it...

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    ... 4 months of use so far doesn't give a great review, but so far
  

*by B***N on Reviewed in the United States on November 7, 2017*

Almost 4 months of use so far doesn't give a great review, but so far, it's been perfect. I filled it with a 5 lbs bag of activated carbon. https://www.amazon.com/gp/product/B00KYYP2A0/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 It filled the container with almost all of the 5 lbs bag. This fits in a 20" big blue filter housing and comes with everything needed (except the media). Well constructed and goes together easily. I have read that activated carbon will get water "highways" over time, where water makes a channel in the carbon. I've removed the filter twice and given it a good shake/stir to collapse any highways to try and get the most life out of the carbon. Based on my water usage, I'll need to replace the carbon in at about 4 to 5 months. Carbon will also grow bacteria, so carbons life is limited. I use this filter behind a 5 micron string filter. I've tried the pleated filters and found the string filters work better for me. Best part about this filter is one can use any media needed for the water conditions. It may seem like a lot up front, but over time, this is the way to go.

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---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-26*