Pentek DBC-10EX2 KDF Carbon Filter - 10" Jumbo 4.5", GAC + Scale Inhibition NZ

A high-capacity coconut shell GAC cartridge with KDF media for Jumbo (Big Blue) 10" x 4.5" housings — reduces chlorine, taste, and odour, with built-in scale inhibition to protect filter life. The Pentek DBC-10EX2 combines granular activated coconut shell carbon with KDF media and a 5-micron spun polypropylene post-sediment element. The KDF media inhibits scale buildup inside the filter, which can reduce product life in hard water or lime-prone supplies. The 5-micron post-filter element adds sediment holding capacity at the outlet side. Suited to whole-house, reverse osmosis, distillation, and bottleless cooler applications. Fits standard Jumbo (Big Blue) 10" housings. Cartridge volume is among the highest in the industry for this size class. Warning: do not use with microbiologically unsafe or unknown quality water without adequate disinfection before or after the system. Key specs at a glance Filter media: granular activated coconut shell carbon + KDF media Post-filter: 5-micron spun bonded polypropylene sediment element Size: 4.5" x 9.84" (114mm x 250mm) — Jumbo / Big Blue 10" Nominal rating: 5 micron Initial pressure drop: 0.41 bar (6 psi) @ 7.6 L/min Max pressure: 125 psi (8.6 bar) Temperature range: 4.4–51.7°C Suits Jumbo (Big Blue) 10" housings How it works The DBC-10EX2 uses three filtration stages in one cartridge. Water first passes through the granular activated coconut shell carbon bed, which adsorbs chlorine, taste, and odour compounds. The KDF media distributed through the carbon bed inhibits scale buildup inside the cartridge — scale accumulation can reduce the active surface area of the carbon and shorten service life, particularly in hard water or high-lime supplies. The 5-micron spun polypropylene post-sediment element at the outlet captures carbon fines and fine particulate before water exits the cartridge. The spin and sonic welding assembly creates a hermetic seal across the cartridge body, improving consistency and reliability. Full specifications Specification Detail Filter media Granular activated coconut shell carbon Additional media KDF (scale inhibition) Post-filter element 5-micron spun bonded polypropylene Nominal rating 5 micron Body High grade polypropylene or polystyrene Assembly Spin and sonic welding (hermetic seal) Size 4.50" x 9.84" (114mm x 250mm) Housing compatibility Jumbo (Big Blue) 10" housings Initial pressure drop 0.41 bar (6 psi) @ 7.6 L/min Max pressure 125 psi (8.6 bar) Temperature range 4.4–51.7°C Part number DBC-10EX2 (255748-43) What's in the box 1 x Pentek DBC-10EX2 carbon cartridge Frequently asked questions What does KDF media do? KDF (Kinetic Degradation Fluxion) media is a copper-zinc alloy that inhibits scale buildup inside the filter cartridge. Scale accumulation on the carbon bed can reduce active surface area and shorten service life, particularly in hard water or high-lime supplies. The KDF media helps the carbon maintain its effectiveness for longer. What is the 5-micron post-filter element for? The spun polypropylene element sits at the outlet side of the cartridge and captures carbon fines and fine particulate before water exits. This improves the clarity of the filtered water and protects downstream equipment. How is this different from a standard GAC cartridge? A standard GAC cartridge uses only activated carbon. The DBC-10EX2 adds KDF media for scale inhibition and a 5-micron post-sediment element for particle capture at the outlet — making it better suited to hard water supplies and applications where carbon fines in the filtered water are a concern. Will it fit my existing housing? Yes, if your housing is a standard Jumbo (Big Blue) 10" x 4.5" size. If you're unsure, check your housing's internal diameter before ordering. Is this suitable for reverse osmosis systems? Yes. The brochure lists RO systems as a primary application, alongside distillation units and bottleless coolers. It is well suited as a pre-filter on RO systems where high chlorine reduction capacity and scale resistance are important. Can I use this on tank or bore water? Only if the water supply is microbiologically safe or is being adequately disinfected before or after this system. This cartridge does not disinfect water — do not use with microbiologically unsafe or unknown quality water without appropriate disinfection in the system. How often should I replace it? Replacement depends on water quality and usage. No specific litre capacity is published for this cartridge. Replace when chlorine taste or odour returns, when flow drops noticeably, or at the interval recommended for your system.