MATRIKX® 32-450-20-MATRIKX Carbon Block Cartridge, 4-1/2″ × 20″, 5 Micron nominal
Part number: 32-450-20-MATRIKX
Manufacturer: MATRIKX® (CTO Series)
MATRIKX® CTO (part 32-450-20-MATRIKX®) is a 4-1/2" × 20" carbon block cartridge made from 100% coconut shell activated carbon, rated 5 micron nominal, for 20" Big Blue housings. FilterBridge Supply takes commercial and public-agency requests for this part by part number.

Specifications
| Spec | Value |
|---|---|
| Part number | 32-450-20-MATRIKX |
| Manufacturer | MATRIKX® |
| Series | CTO |
| Product type | Carbon Block |
| Diameter | 4-1/2″ |
| Length | 20″ |
| Micron rating | 5 micron nominal |
| Filter media | 100% coconut shell activated carbon |
| Chlorine capacity | > 51,000 gallons @ 7 gpm (> 193,000 litres @ 26.6 l/min) |
| Initial ΔP at test flow | 7 psid @ 7 gpm |
| Certification (material requirements) | The filter cartridge is tested and certified by NSF International against NSF/ANSI Standard 42 for material safety requirements only. |
| Certification (material requirements) | The filter cartridge is tested and certified by WQA against NSF/ANSI Standard 42 for material safety requirements only. |
| Material compliance | This filter cartridge is certified by the Water Quality Association to WQA/ASPE/ANSI S-803 for sustainability. |
Specifications are transcribed from the manufacturer's published data. Nothing is inferred, rounded or converted.
What to check before you order
This page does not say this part works in any particular housing or swaps for any other brand's part. Before ordering, compare these against what you use today:
- Size. This part is 4-1/2″ × 20″ (diameter × length). Check your housing's cartridge size or the label on the part you use today.
- Micron rating. 5 Micron nominal. If your specification calls for an absolute rating or a particular rating type, say so in your request.
- Media. 100% coconut shell activated carbon. If the part you use now has a different media, flag it so the change is a conscious one.
- End style and seal. The manufacturer data we hold does not list end caps or gaskets for this part. If your housing needs a spring seat, a fin end or a gasket, tell us.
- Certification. The manufacturer's statement is shown word for word in the specification table. If your specification needs a certification for this exact part number, put it in your request.
Our spec comparison guide walks through each item.
Where it's used
Chlorine reduction, point-of-use and reverse osmosis applications. Whether this part suits a particular system depends on the housing, the duty and the water. Send us the application and we'll tell you whether this format is the right one, rather than assuming it is.
Buying for a water district or city?
Send the spec or a recent PO line and we'll work from your number. Public-agency buyers can see how we handle quote requests and vendor lists on our municipal purchasing page.
FAQ
- What size is 32-450-20-MATRIKX?
- 4-1/2″ × 20″ (diameter × length), as published by the manufacturer.
- What micron rating does 32-450-20-MATRIKX have?
- 5 Micron nominal. If your specification requires a nominal or an absolute rating, tell us in your request.
- What is 32-450-20-MATRIKX made of?
- 100% coconut shell activated carbon.
- Is 32-450-20-MATRIKX NSF certified?
- The filter cartridge is tested and certified by NSF International against NSF/ANSI Standard 42 for material safety requirements only. The filter cartridge is tested and certified by WQA against NSF/ANSI Standard 42 for material safety requirements only. This filter cartridge is certified by the Water Quality Association to WQA/ASPE/ANSI S-803 for sustainability.
- Will 32-450-20-MATRIKX fit my housing or replace another brand's part?
- This page doesn't say that. Send us your housing model or the part number you use now, and we'll tell you what we can supply against it. A person reviews every request.
How a quote works
Send us the part number and we'll tell you what we can supply against it. We check your part number against the manufacturer's published specs and confirm fit with our supplier before you order.
Every order is quoted individually. We confirm each quote with the manufacturer before we send it to you. We don't publish a price list. Pricing comes on a written quote for your part numbers and quantities.
Request a written quote with your part numbers, the quantity and the delivery address. We'll send a written quote. If you'd like to proceed, reply to confirm. We can send the manufacturer data sheet for any part we quote.
Request a quote
Send us the part number and we'll tell you what we can supply against it.
- Request a quote: part number, number of cases, delivery location.
- Replacing a different part number? Send it and we'll tell you what we can supply.
- Build an RFQ
- Public agencies: municipal purchasing