| Matrikx 01-450-20-MATRIKX CTO Plus 1 Mic Chlorine/Chloramine & VOC Reduction | espwaterproducts.com | 85.99 USD | 107.49 USD | −20% |
| Matrikx 06-250-10-MATRIKX PB1 Chlorine, Chloramine, VOC, CYST, Lead Reduction 2.5" x 10" 0.5 Micron | espwaterproducts.com | 19.99 USD | 24.99 USD | −20% |
| Matrikx 32-250-10-MATRIKX CTO 5-Micron Chlorine Chloramine Filter 2.5" x 10" | espwaterproducts.com | 10.99 USD | 13.74 USD | −20% |
| PB1 20" x 4.5" 0.5 micron | filterific.com.au | 245 AUD | 290 AUD | −15.5% |
| CTO 20" x 4.5" 5 micron | filterific.com.au | 120 AUD | 139 AUD | −13.7% |
| MATRIKX 20" Jumbo Carbon Block Water Filter Cartridge – CTO 5 Micron or CTO Plus 1 Micron | filtrationstation.co.nz | 178.25 NZD | 0 NZD | — |
| 20" Jumbo- 1 Micron Carbon Block CHLOROGAURD by KX- Technology- Matrix | spring-clear.co.uk | 174 GBP | — | — |
| 20" Jumbo, 1 Micron Carbon Block CTO PLUS Filter by KX Matrix | spring-clear.co.uk | 163 GBP | — | — |
| Matrikx CTO/2 20" Jumbo Carbon Block 5 Micron Filter | spring-clear.co.uk | 130 GBP | — | — |
| PB1 10" x 4.5" 0.5 micron | filterific.com.au | 128.7 AUD | — | — |
| Martikx Radial Flow 20" Big Blue Coconut Carbon GAC Filter Cartridge | purifi.ca | 119 CAD | — | — |
| 10" Big 5 Micron CTO Carbon Block KX CTO | nzpumpandwaterfilters.co.nz | 107.17 NZD | — | — |
| MATRIKX 10" Jumbo Carbon Block Water Filter Cartridge – CTO 5 Micron or CTO Plus 1 Micron | filtrationstation.co.nz | 106.95 NZD | 0 NZD | — |
| Matrikx Chlorogaurd 20"Carbon Block 1 Micron | spring-clear.co.uk | 100 GBP | — | — |
| WSI-FLU25-1005 5 Micron Fluoride 10" Standard Cartridge | uvwatersystems.co.nz | 78.2 NZD | — | — |
| Matrikx CTO PLUS 10" Jumbo Carbon Block 1 Micron Filter | spring-clear.co.uk | 72 GBP | — | — |
| IL-PB1 Inline Filter | filterific.com.au | 69 AUD | — | — |
| Matrikx CTO/2 10" Jumbo Carbon Block 5 Micron Filter | spring-clear.co.uk | 67 GBP | — | — |
| CTO 10" x 4.5" 5 micron | filterific.com.au | 61.5 AUD | — | — |
| CTO 20" x 2.5" 5 micron | filterific.com.au | 59 AUD | — | — |
| 20" Standard- 5 Micron Carbon Block CTO/2 Filter by KX Matrix | spring-clear.co.uk | 56 GBP | — | — |
| Matrikx ChloraGuard Chloramine Removal Carbon Block - 1uM | reefsupplies.ca | 54.99 CAD | — | — |
| MATRIKX 10" Standard Carbon Block Water Filter Cartridge – CTO 5 Micron or CTO Plus 1 Micron | filtrationstation.co.nz | 48.3 NZD | 0 NZD | — |
| PB1 10" x 2.5" 0.5 micron | filterific.com.au | 47.95 AUD | — | — |
| WSI-CTO25-1001 - CTO Plus 1 Micron Carbon 10" Standard Cartridge | uvwatersystems.co.nz | 46 NZD | — | — |
| WSI-CTO25-1005 5 Micron Carbon 10" Standard Cartridge | uvwatersystems.co.nz | 46 NZD | — | — |
| PB1 5" x 2.5" 0.5 micron | filterific.com.au | 42.35 AUD | — | — |
| KX Matrikx Ceramikx Filter 10" x 2.5" | filterific.com.au | 40 AUD | — | — |
| IL-CTO Inline Filter | filterific.com.au | 38 AUD | — | — |
| KX Matrikx Ceramikx Filter 10" x 2.5" - Screw Cap | filterific.com.au | 35 AUD | — | — |
| Matrikx CTO 10"x 2.5" Carbon Block Filter 5 Micron | pumpsonline.co.nz | 33 NZD | — | — |
| 5" 5 Micron Carbon Block CTO/2 Filter by KX Matrix | spring-clear.co.uk | 29 GBP | — | — |
| CTO 10" x 2.5" 5 micron | filterific.com.au | 29 AUD | — | — |
| MATRIKX CTO 2.5 x 9.75 inch filter cartridge — 32-250-10-MATRIKX, MATRIKX® CTO Filter Cart, 2.5" x 9.75", FEAW0101004 | watersoftenerplus.com | 26.92 USD | — | — |
| 0.5 Micron Lead Removal Carbon Block 10" | spectrapure.com | 16.99 USD | — | — |