{"product_id":"20-jumbo-kdf-gac-water-filter-cartridge","title":"20\" Jumbo KDF\/GAC Water Filter Cartridge","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eImprove water quality with a \u003cstrong\u003e20\" Jumbo KDF\/GAC water filter cartridge\u003c\/strong\u003e that combines granular activated coconut shell carbon with KDF media in one cartridge.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe GAC media helps reduce \u003cstrong\u003echlorine, unpleasant taste and odour\u003c\/strong\u003e, while the KDF media works alongside the carbon to support cartridge performance.\u003c\/p\u003e\n\u003cp\u003eChoose \u003cstrong\u003eValue Waimana\u003c\/strong\u003e for straightforward KDF\/GAC filtration with polypropylene sediment filtration pads at each end, or \u003cstrong\u003ePremium Pentair Pentek\u003c\/strong\u003e for high-performance granular activated coconut shell carbon, KDF media designed to inhibit scale buildup, and a dedicated \u003cstrong\u003e5 micron spun-bonded polypropylene post-filter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBoth cartridges measure \u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e and are designed for compatible \u003cstrong\u003e20\" Jumbo \/ Big Blue water filter housings\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eProduct Options\u003c\/h2\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003ePremium\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWaimana Water\u003c\/td\u003e\n\u003ctd\u003ePentair Pentek\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20KDF\/GAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20BKDF-GAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eKDF\/GAC\u003c\/td\u003e\n\u003ctd\u003eKDF\/GAC Purifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Media\u003c\/td\u003e\n\u003ctd\u003eCoconut shell activated carbon\u003c\/td\u003e\n\u003ctd\u003eHigh-performance granular activated coconut shell carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKDF Media\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSediment Filtration\u003c\/td\u003e\n\u003ctd\u003ePolypropylene pads at each end\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5 micron spun-bonded polypropylene post-filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorine Reduction\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaste \u0026amp; Odour Reduction\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKDF Function\u003c\/td\u003e\n\u003ctd\u003eProlongs carbon life and increases effectiveness\u003c\/td\u003e\n\u003ctd\u003eInhibits scale buildup within the filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eEveryday KDF\/GAC filtration\u003c\/td\u003e\n\u003ctd\u003eHigh-capacity filtration \u0026amp; scale-prone applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eValue — Waimana 20KDF\/GAC\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWaimana 20KDF\/GAC\u003c\/strong\u003e combines KDF media with premium-quality \u003cstrong\u003ecoconut shell granular activated carbon\u003c\/strong\u003e in a 20\" × 4½\" Jumbo cartridge.\u003c\/p\u003e\n\u003cp\u003eThe activated carbon helps reduce \u003cstrong\u003echlorine, unpleasant taste and odour\u003c\/strong\u003e, while the KDF media helps \u003cstrong\u003eprolong the life and increase the effectiveness of the carbon filtration media\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe cartridge also incorporates \u003cstrong\u003epolypropylene sediment filtration pads at each end\u003c\/strong\u003e, providing additional sediment filtration around the KDF\/GAC media.\u003c\/p\u003e\n\u003cp\u003eChoose Value for dependable everyday KDF\/GAC filtration in a larger 20\" Jumbo format.\u003c\/p\u003e\n\u003ch2\u003ePremium — Pentair Pentek 20BKDF-GAC\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair Pentek 20BKDF-GAC\u003c\/strong\u003e is a premium 20\" × 4½\" KDF\/GAC purifier cartridge designed for high-capacity chlorine, taste and odour reduction.\u003c\/p\u003e\n\u003cp\u003eThe cartridge combines \u003cstrong\u003ehigh-performance granular activated coconut shell carbon\u003c\/strong\u003e with KDF media designed to \u003cstrong\u003einhibit scale buildup within the filter that can decrease cartridge life\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt also incorporates a \u003cstrong\u003e5 micron spun-bonded polypropylene post-sediment element\u003c\/strong\u003e, providing additional sediment filtration and increased dirt-holding capacity.\u003c\/p\u003e\n\u003cp\u003eChoose Premium where you want high-performance carbon media, \u003cstrong\u003escale-control functionality and dedicated 5 micron post-filtration\u003c\/strong\u003e in a 20\" Jumbo cartridge.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Water Filter Cartridge?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKDF + GAC filtration\u003c\/strong\u003e — combines two treatment media within one cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorine reduction\u003c\/strong\u003e — both options help reduce chlorine from the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaste and odour improvement\u003c\/strong\u003e — coconut shell activated carbon helps treat common taste and odour issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20\" × 4½\" Jumbo format\u003c\/strong\u003e — both options are designed for compatible 20\" Jumbo \/ Big Blue housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoconut shell activated carbon\u003c\/strong\u003e — used for effective carbon treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSediment filtration included\u003c\/strong\u003e — Waimana uses polypropylene filtration pads, while Pentair incorporates a dedicated 5 micron post-filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo treatment levels\u003c\/strong\u003e — choose Value for straightforward KDF\/GAC filtration or Premium for additional scale-control and post-filtration features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium scale control\u003c\/strong\u003e — Pentair's KDF media helps inhibit scale buildup within the cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium 5 micron post-filtration\u003c\/strong\u003e — provides additional sediment filtration and increased dirt-holding capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20\" cartridge format\u003c\/strong\u003e — provides a larger filtration cartridge for compatible 20\" Jumbo systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eA KDF\/GAC cartridge combines \u003cstrong\u003eKDF media with GAC — Granular Activated Carbon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAs water travels through the cartridge, the granular activated coconut shell carbon provides adsorption treatment for \u003cstrong\u003echlorine, unpleasant taste and odour\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe KDF media works alongside the carbon.\u003c\/p\u003e\n\u003cp\u003eIn the \u003cstrong\u003eWaimana 20KDF\/GAC\u003c\/strong\u003e, KDF helps \u003cstrong\u003eprolong the life and increase the effectiveness of the carbon filtration media\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn the \u003cstrong\u003ePentair 20BKDF-GAC\u003c\/strong\u003e, KDF media is designed to \u003cstrong\u003einhibit scale buildup within the cartridge\u003c\/strong\u003e, helping prevent scale accumulation from decreasing cartridge life.\u003c\/p\u003e\n\u003cp\u003eThe Pentair cartridge also incorporates a \u003cstrong\u003e5 micron spun-bonded polypropylene post-filter\u003c\/strong\u003e, adding sediment filtration after the KDF\/GAC treatment media.\u003c\/p\u003e\n\u003ch2\u003eBest Suited For\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e20\" Jumbo KDF\/GAC water filter cartridge\u003c\/strong\u003e is well suited to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMains-water filtration\u003c\/li\u003e\n\u003cli\u003eChlorine reduction\u003c\/li\u003e\n\u003cli\u003eTaste and odour treatment\u003c\/li\u003e\n\u003cli\u003eResidential water filtration\u003c\/li\u003e\n\u003cli\u003eWhole-house filtration systems\u003c\/li\u003e\n\u003cli\u003e20\" Jumbo \/ Big Blue filter housings\u003c\/li\u003e\n\u003cli\u003eMulti-stage water filtration systems\u003c\/li\u003e\n\u003cli\u003eApplications requiring KDF and GAC in one cartridge\u003c\/li\u003e\n\u003cli\u003eReverse-osmosis prefiltration where compatible\u003c\/li\u003e\n\u003cli\u003eGeneral water-quality improvement\u003c\/li\u003e\n\u003cli\u003eHigher-capacity filtration applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003ePremium Pentair\u003c\/strong\u003e is particularly useful where lime and scale buildup within the filter is a concern.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003eValue — Waimana\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003ePremium — Pentair Pentek\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20KDF\/GAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20BKDF-GAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCartridge Size\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eKDF\/GAC\u003c\/td\u003e\n\u003ctd\u003eKDF\/GAC Purifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Media\u003c\/td\u003e\n\u003ctd\u003eCoconut shell activated carbon\u003c\/td\u003e\n\u003ctd\u003eHigh-performance granular activated coconut shell carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKDF Media\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSediment Filtration\u003c\/td\u003e\n\u003ctd\u003ePolypropylene pads at each end\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5 micron spun-bonded polypropylene post-filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorine Reduction\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaste \u0026amp; Odour Reduction\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKDF Function\u003c\/td\u003e\n\u003ctd\u003eProlongs carbon life and increases effectiveness\u003c\/td\u003e\n\u003ctd\u003eInhibits scale buildup within the filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Compatibility\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo \/ Big Blue\u003c\/td\u003e\n\u003ctd\u003e20\" Jumbo \/ Big Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eValue vs Premium — Which Should I Choose?\u003c\/h2\u003e\n\u003ch3\u003eChoose Value Waimana if you want:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKDF\/GAC filtration\u003c\/li\u003e\n\u003cli\u003eCoconut shell activated carbon\u003c\/li\u003e\n\u003cli\u003eChlorine reduction\u003c\/li\u003e\n\u003cli\u003eTaste and odour improvement\u003c\/li\u003e\n\u003cli\u003ePolypropylene sediment filtration pads\u003c\/li\u003e\n\u003cli\u003eKDF to help prolong carbon life\u003c\/li\u003e\n\u003cli\u003eKDF to increase carbon effectiveness\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e20\" × 4½\" Jumbo sizing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eA practical, cost-effective replacement option\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor straightforward filtration, the \u003cstrong\u003eWaimana 20KDF\/GAC\u003c\/strong\u003e provides the core benefits of KDF and granular activated carbon in a 20\" Jumbo cartridge.\u003c\/p\u003e\n\u003ch3\u003eChoose Premium Pentair if you want:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-performance granular activated coconut shell carbon\u003c\/li\u003e\n\u003cli\u003eKDF media designed to inhibit scale buildup\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5 micron post-sediment filtration\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eIncreased dirt-holding capacity\u003c\/li\u003e\n\u003cli\u003eHigh-capacity chlorine taste and odour reduction\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e20\" × 4½\" Jumbo sizing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBetter suitability where lime and scale buildup within the filter is a concern\u003c\/li\u003e\n\u003cli\u003eA premium Pentair Pentek cartridge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe main reason to choose Premium is its combination of \u003cstrong\u003ehigh-performance GAC, scale-control functionality and dedicated 5 micron post-filtration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eGAC vs Carbon Block — What's the Difference?\u003c\/h2\u003e\n\u003cp\u003eThese cartridges use \u003cstrong\u003eGAC — Granular Activated Carbon\u003c\/strong\u003e rather than a solid carbon block.\u003c\/p\u003e\n\u003cp\u003eGAC contains loose activated carbon granules and is less dense than compressed carbon-block media.\u003c\/p\u003e\n\u003cp\u003eThis construction allows the cartridge to combine \u003cstrong\u003egranular coconut shell carbon with KDF media\u003c\/strong\u003e within the same treatment cartridge.\u003c\/p\u003e\n\u003cp\u003eIf your priority is chlorine, taste and odour treatment combined with the additional benefits of KDF media, a KDF\/GAC cartridge is a practical option.\u003c\/p\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eThis cartridge is designed for use in a \u003cstrong\u003ecompatible 20\" Jumbo \/ Big Blue water filter housing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBoth Value and Premium options measure \u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTo replace the cartridge:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the water supply.\u003c\/li\u003e\n\u003cli\u003eRelease pressure from the filter housing.\u003c\/li\u003e\n\u003cli\u003eRemove the filter housing sump.\u003c\/li\u003e\n\u003cli\u003eRemove the existing cartridge.\u003c\/li\u003e\n\u003cli\u003eClean the housing if required.\u003c\/li\u003e\n\u003cli\u003eCheck that the O-ring is clean and seated correctly.\u003c\/li\u003e\n\u003cli\u003eInsert the new KDF\/GAC cartridge.\u003c\/li\u003e\n\u003cli\u003eReassemble the housing.\u003c\/li\u003e\n\u003cli\u003eSlowly restore water pressure.\u003c\/li\u003e\n\u003cli\u003eCheck the housing carefully for leaks.\u003c\/li\u003e\n\u003cli\u003eFlush the new cartridge before normal use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eMaintenance\u003c\/h2\u003e\n\u003cp\u003eCartridge life depends on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncoming water quality\u003c\/li\u003e\n\u003cli\u003eWater usage\u003c\/li\u003e\n\u003cli\u003eChlorine levels\u003c\/li\u003e\n\u003cli\u003eSediment loading\u003c\/li\u003e\n\u003cli\u003eScale conditions\u003c\/li\u003e\n\u003cli\u003eSystem flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplace the cartridge when chlorine taste or odour begins to return, treatment performance noticeably declines, or water flow becomes excessively restricted.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1 × 20\" Jumbo KDF\/GAC Water Filter Cartridge\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose from:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValue — Waimana Water 20KDF\/GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eor\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePremium — Pentair Pentek 20BKDF-GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth options measure \u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat does a KDF\/GAC water filter do?\u003c\/h3\u003e\n\u003cp\u003eA KDF\/GAC cartridge combines \u003cstrong\u003egranular activated carbon with KDF media\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe activated carbon reduces chlorine and improves unpleasant taste and odour, while the KDF media works alongside the carbon to support cartridge performance.\u003c\/p\u003e\n\u003ch3\u003eWhat does GAC mean?\u003c\/h3\u003e\n\u003cp\u003eGAC stands for \u003cstrong\u003eGranular Activated Carbon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eUnlike a compressed carbon block, GAC consists of loose activated carbon granules.\u003c\/p\u003e\n\u003ch3\u003eWhat does the KDF do?\u003c\/h3\u003e\n\u003cp\u003eIn the \u003cstrong\u003eWaimana 20KDF\/GAC\u003c\/strong\u003e, KDF helps \u003cstrong\u003eprolong carbon life and increase the effectiveness of the carbon media\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIn the \u003cstrong\u003ePentair 20BKDF-GAC\u003c\/strong\u003e, the KDF media is designed to \u003cstrong\u003einhibit scale buildup within the filter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it reduce chlorine?\u003c\/h3\u003e\n\u003cp\u003eYes. Both options are designed to reduce \u003cstrong\u003echlorine\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it help with taste and odour?\u003c\/h3\u003e\n\u003cp\u003eYes. The granular activated coconut shell carbon helps reduce unpleasant taste and odour.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between Value and Premium?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eValue Waimana 20KDF\/GAC\u003c\/strong\u003e combines KDF, coconut shell activated carbon and polypropylene sediment filtration pads.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003ePremium Pentair 20BKDF-GAC\u003c\/strong\u003e combines high-performance granular activated coconut shell carbon with KDF media designed to inhibit scale buildup, plus a dedicated \u003cstrong\u003e5 micron spun-bonded polypropylene post-filter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes the Waimana filter sediment?\u003c\/h3\u003e\n\u003cp\u003eYes. The Waimana cartridge incorporates \u003cstrong\u003epolypropylene sediment filtration pads at each end\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes the Pentair filter sediment?\u003c\/h3\u003e\n\u003cp\u003eYes. The Pentair incorporates a \u003cstrong\u003e5 micron spun-bonded polypropylene post-sediment element\u003c\/strong\u003e, providing additional sediment filtration and increased dirt-holding capacity.\u003c\/p\u003e\n\u003ch3\u003eWhich option should I choose for scale-prone water?\u003c\/h3\u003e\n\u003cp\u003eChoose the \u003cstrong\u003ePremium Pentair 20BKDF-GAC\u003c\/strong\u003e where lime and scale buildup within the cartridge is a concern.\u003c\/p\u003e\n\u003cp\u003eIts KDF media is designed to inhibit scale buildup that can otherwise decrease cartridge life.\u003c\/p\u003e\n\u003ch3\u003eIs this a carbon block filter?\u003c\/h3\u003e\n\u003cp\u003eNo. These cartridges use \u003cstrong\u003egranular activated carbon (GAC)\u003c\/strong\u003e rather than compressed carbon block media.\u003c\/p\u003e\n\u003ch3\u003eAre both cartridges the same size?\u003c\/h3\u003e\n\u003cp\u003eYes. Both the \u003cstrong\u003eWaimana 20KDF\/GAC\u003c\/strong\u003e and \u003cstrong\u003ePentair 20BKDF-GAC\u003c\/strong\u003e measure \u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill this fit my 20\" Jumbo housing?\u003c\/h3\u003e\n\u003cp\u003eBoth options are designed for compatible \u003cstrong\u003e20\" Jumbo \/ Big Blue water filter housings\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe cartridge dimensions are \u003cstrong\u003e20\" × 4½\"\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between a 10\" and 20\" KDF\/GAC cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe main physical difference is cartridge length.\u003c\/p\u003e\n\u003cp\u003eThis listing is specifically for \u003cstrong\u003e20\" × 4½\" Jumbo cartridges\u003c\/strong\u003e and requires a compatible 20\" Jumbo housing. A 10\" cartridge is designed for a shorter 10\" housing.\u003c\/p\u003e","brand":"Filtration Station NZ","offers":[{"title":"Value — Waimana","offer_id":46054112886828,"sku":"20KDF\/GAC","price":270.0,"currency_code":"NZD","in_stock":true},{"title":"Premium — Pentair","offer_id":46054112919596,"sku":"20BKDF-GAC","price":375.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/7_Waimana_20_GAC_Filter_1.jpg?v=1787869427","url":"https:\/\/www.filtrationstation.co.nz\/products\/20-jumbo-kdf-gac-water-filter-cartridge","provider":"Filtration Station NZ","version":"1.0","type":"link"}