{"product_id":"pentair-20-inch-jumbo-twin-filter-system","title":"Pentair 20\" Jumbo Twin Whole House Water Filter System","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eBuild your whole-house filtration around your water supply with the \u003cstrong\u003ePentair 20\" Jumbo Twin Whole House Water Filter System\u003c\/strong\u003e, available in three configurations for custom filtration, rainwater or mains water.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe system combines \u003cstrong\u003etwo Pentair 20\" Jumbo filter housings\u003c\/strong\u003e on a stainless steel mounting bracket, supplied with a ball valve and housing spanner.\u003c\/p\u003e\n\u003cp\u003eChoose \u003cstrong\u003eHousing Only\u003c\/strong\u003e if you want to select your own cartridges, \u003cstrong\u003eRainwater\u003c\/strong\u003e for tank-water sediment and carbon filtration, or \u003cstrong\u003eMains Water\u003c\/strong\u003e for town-water sediment and KDF\/GAC treatment.\u003c\/p\u003e\n\u003cp\u003eThe larger \u003cstrong\u003e20\" Jumbo format\u003c\/strong\u003e provides a high-capacity platform for whole-house filtration applications.\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\"\u003eOption\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eCartridges Included\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eBest Suited For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Only\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo cartridges\u003c\/td\u003e\n\u003ctd\u003eBuild your own filtration combination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRainwater\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20BDGD-PA + 20BRFGAC\u003c\/td\u003e\n\u003ctd\u003eTank \/ rainwater supplies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMains Water\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20BDGD-PA + 20BKDF-GAC\u003c\/td\u003e\n\u003ctd\u003eTown \/ mains water supplies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eAll three options use the same \u003cstrong\u003etwin 20\" Jumbo housing platform\u003c\/strong\u003e, allowing you to choose the filtration configuration that best matches your water source.\u003c\/p\u003e\n\u003ch2\u003eHousing Only\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHousing Only\u003c\/strong\u003e option provides the complete assembled twin-housing system \u003cstrong\u003ewithout filter cartridges\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 × 20BWH 20\" Jumbo Filter Housings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting bracket\u003c\/li\u003e\n\u003cli\u003eBall valve\u003c\/li\u003e\n\u003cli\u003eHousing spanner\u003c\/li\u003e\n\u003cli\u003eAssembled twin whole-house configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNo filter cartridges are included.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis option is ideal when you already know which cartridges you want to use or need to create a filtration combination for a specific water-quality requirement.\u003c\/p\u003e\n\u003cp\u003eSimply select compatible \u003cstrong\u003e20\" Jumbo \/ Big Blue cartridges\u003c\/strong\u003e appropriate for your application.\u003c\/p\u003e\n\u003ch2\u003eRainwater\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRainwater\u003c\/strong\u003e option is configured for \u003cstrong\u003etank and rainwater supplies\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt combines progressive sediment filtration with radial flow granular activated carbon treatment.\u003c\/p\u003e\n\u003ch3\u003eStage 1 — Pentair 20BDGD-PA Dual Gradient Density Sediment Filter\u003c\/h3\u003e\n\u003cp\u003eThe first stage uses the \u003cstrong\u003ePentair 20BDGD-PA\u003c\/strong\u003e, a dual gradient density sediment cartridge.\u003c\/p\u003e\n\u003cp\u003eIt provides progressive filtration from:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e25 Micron Outer Layer → 1 Micron Final Filtration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis allows larger sediment to be captured through the outer portion of the cartridge before finer particles are treated deeper within the filter.\u003c\/p\u003e\n\u003ch3\u003eStage 2 — Pentair 20BRFGAC Radial Flow Granular Activated Carbon\u003c\/h3\u003e\n\u003cp\u003eThe second stage uses the \u003cstrong\u003e20BRFGAC Radial Flow Granular Activated Carbon cartridge\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts radial flow GAC design provides a carbon treatment stage following sediment filtration.\u003c\/p\u003e\n\u003ch3\u003eRainwater Filtration Path\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e25-to-1 Micron Dual Gradient Sediment → Radial Flow Granular Activated Carbon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis provides a ready-made two-stage configuration for tank and rainwater supplies.\u003c\/p\u003e\n\u003ch2\u003eMains Water\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMains Water\u003c\/strong\u003e option is configured for \u003cstrong\u003etown and mains water supplies\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt combines progressive sediment filtration with \u003cstrong\u003eKDF\/GAC treatment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eStage 1 — Pentair 20BDGD-PA Dual Gradient Density Sediment Filter\u003c\/h3\u003e\n\u003cp\u003eThe first stage uses the \u003cstrong\u003e20BDGD-PA Dual Gradient Density Sediment Cartridge\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts progressive design provides:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e25 Micron Outer Filtration → 1 Micron Final Filtration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe gradient construction allows larger particles to be captured first before progressively filtering finer sediment.\u003c\/p\u003e\n\u003ch3\u003eStage 2 — Pentair 20BKDF-GAC\u003c\/h3\u003e\n\u003cp\u003eThe second stage uses the \u003cstrong\u003ePentair 20BKDF-GAC\u003c\/strong\u003e cartridge.\u003c\/p\u003e\n\u003cp\u003eThis cartridge combines \u003cstrong\u003eKDF media with high-performance granular activated coconut shell carbon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe KDF media helps inhibit scale buildup within the filter, while the granular activated carbon provides treatment for \u003cstrong\u003echlorine, taste and odour\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt also incorporates a \u003cstrong\u003e5 micron spun-bonded polypropylene post sediment element\u003c\/strong\u003e for additional dirt-holding capacity.\u003c\/p\u003e\n\u003ch3\u003eMains Water Filtration Path\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e25-to-1 Micron Dual Gradient Sediment → KDF + Granular Activated Carbon → 5 Micron Post-Filtration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis provides sediment and KDF\/GAC treatment in a twin 20\" Jumbo whole-house system.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Whole House Filter System?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwin-stage whole-house filtration\u003c\/strong\u003e — two 20\" Jumbo housings provide two sequential treatment stages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree configurations available\u003c\/strong\u003e — choose Housing Only, Rainwater or Mains Water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair 20\" Jumbo housings\u003c\/strong\u003e — built around two 20BWH filter housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-capacity 20\" format\u003c\/strong\u003e — designed for whole-house filtration applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomisable Housing Only option\u003c\/strong\u003e — select cartridges according to your own water-treatment requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Rainwater configuration\u003c\/strong\u003e — combines 25-to-1 micron sediment filtration with radial flow GAC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Mains Water configuration\u003c\/strong\u003e — combines 25-to-1 micron sediment filtration with KDF\/GAC treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel mounting bracket\u003c\/strong\u003e — securely supports the twin housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall valve included\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing spanner included\u003c\/strong\u003e — assists with cartridge servicing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembled system\u003c\/strong\u003e — supplied as a twin whole-house filtration configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable cartridges\u003c\/strong\u003e — maintain the system without replacing the complete housing assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe system treats incoming water through \u003cstrong\u003etwo sequential 20\" Jumbo filtration stages\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe exact filtration path depends on the option selected.\u003c\/p\u003e\n\u003ch3\u003eHousing Only\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1 — Your Selected Cartridge → Stage 2 — Your Selected Cartridge\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose compatible 20\" Jumbo cartridges based on your water source and treatment requirements.\u003c\/p\u003e\n\u003ch3\u003eRainwater\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1 — 25-to-1 Micron Dual Gradient Sediment → Stage 2 — Radial Flow GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sediment cartridge treats particulate matter before the water reaches the granular activated carbon stage.\u003c\/p\u003e\n\u003ch3\u003eMains Water\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1 — 25-to-1 Micron Dual Gradient Sediment → Stage 2 — KDF\/GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe first cartridge provides progressive sediment filtration before the second cartridge provides KDF and activated carbon treatment.\u003c\/p\u003e\n\u003ch2\u003eBest Suited For\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair 20\" Jumbo Twin Whole House Water Filter System\u003c\/strong\u003e is well suited to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhole-house water filtration\u003c\/li\u003e\n\u003cli\u003ePoint-of-entry filtration\u003c\/li\u003e\n\u003cli\u003eTank and rainwater filtration\u003c\/li\u003e\n\u003cli\u003eTown and mains water filtration\u003c\/li\u003e\n\u003cli\u003eResidential properties\u003c\/li\u003e\n\u003cli\u003eRural properties\u003c\/li\u003e\n\u003cli\u003eCustom twin-stage filtration\u003c\/li\u003e\n\u003cli\u003e20\" Jumbo filtration systems\u003c\/li\u003e\n\u003cli\u003eHigh-capacity filtration applications\u003c\/li\u003e\n\u003cli\u003eSediment filtration\u003c\/li\u003e\n\u003cli\u003eCarbon filtration\u003c\/li\u003e\n\u003cli\u003eKDF\/GAC treatment\u003c\/li\u003e\n\u003cli\u003eProperties wanting replaceable cartridge filtration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose the configuration according to your water source and filtration requirements.\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\u003ePentair 20\" Jumbo Twin System\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\u003e\u003cstrong\u003ePentair\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Type\u003c\/td\u003e\n\u003ctd\u003eTwin Whole House Water Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Housings\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Model\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20BWH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Size\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" Jumbo\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eTwin Stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Bracket\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eStainless Steel\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBall Valve\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Spanner\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Only Cartridges\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNone\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRainwater Cartridges\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20BDGD-PA + 20BRFGAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains Water Cartridges\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20BDGD-PA + 20BKDF-GAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWhole-house \/ point-of-entry filtration\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\u003eWhich Option Should I Choose?\u003c\/h2\u003e\n\u003ch3\u003eChoose Housing Only If:\u003c\/h3\u003e\n\u003cp\u003eYou want the assembled twin Pentair system but prefer to \u003cstrong\u003eselect your own 20\" Jumbo cartridges\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is the best option for custom filtration requirements or where you already have suitable replacement cartridges.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant: No filter cartridges are included with this option.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eChoose Rainwater If:\u003c\/h3\u003e\n\u003cp\u003eYour property uses a \u003cstrong\u003etank or rainwater supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eYou receive:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BDGD-PA 25-to-1 Micron Dual Gradient Sediment + 20BRFGAC Radial Flow GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis provides progressive sediment filtration followed by granular activated carbon treatment.\u003c\/p\u003e\n\u003ch3\u003eChoose Mains Water If:\u003c\/h3\u003e\n\u003cp\u003eYour property uses a \u003cstrong\u003etown or mains water supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eYou receive:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BDGD-PA 25-to-1 Micron Dual Gradient Sediment + 20BKDF-GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis provides progressive sediment filtration followed by KDF\/GAC treatment.\u003c\/p\u003e\n\u003ch2\u003eRainwater Cartridge Combination\u003c\/h2\u003e\n\u003cp\u003eThe Rainwater configuration contains:\u003c\/p\u003e\n\u003ch3\u003e1. Pentair 20BDGD-PA Dual Gradient Density Sediment Cartridge\u003c\/h3\u003e\n\u003cp\u003eProvides progressive:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e25 Micron → 1 Micron\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003esediment filtration.\u003c\/p\u003e\n\u003cp\u003eThe gradient design captures larger particles through the outer section before progressively filtering finer particles deeper within the cartridge.\u003c\/p\u003e\n\u003ch3\u003e2. Pentair 20BRFGAC Radial Flow GAC Cartridge\u003c\/h3\u003e\n\u003cp\u003eProvides the second-stage \u003cstrong\u003egranular activated carbon treatment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts radial flow design passes water through the GAC media following the initial sediment filtration stage.\u003c\/p\u003e\n\u003cp\u003eTogether:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Gradient Sediment Filtration → Radial Flow Carbon Treatment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eMains Water Cartridge Combination\u003c\/h2\u003e\n\u003cp\u003eThe Mains Water configuration contains:\u003c\/p\u003e\n\u003ch3\u003e1. Pentair 20BDGD-PA Dual Gradient Density Sediment Cartridge\u003c\/h3\u003e\n\u003cp\u003eProvides progressive \u003cstrong\u003e25-to-1 micron sediment filtration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e2. Pentair 20BKDF-GAC\u003c\/h3\u003e\n\u003cp\u003eCombines \u003cstrong\u003eKDF media and high-performance granular activated coconut shell carbon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe KDF media helps inhibit scale buildup within the filter, while the activated carbon provides chlorine, taste and odour treatment.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e5 micron spun-bonded polypropylene post sediment element\u003c\/strong\u003e provides additional dirt-holding capacity.\u003c\/p\u003e\n\u003cp\u003eTogether:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Gradient Sediment Filtration → KDF\/GAC Treatment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eThe system is supplied as an \u003cstrong\u003eassembled twin-housing whole-house filtration system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eInstallation should position the filtration system on the incoming water line so water passes through both housings in the correct sequence.\u003c\/p\u003e\n\u003cp\u003eThe stainless steel bracket supports the two 20BWH housings.\u003c\/p\u003e\n\u003cp\u003eFor cartridge-equipped configurations:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRainwater\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1:\u003c\/strong\u003e 20BDGD-PA\u003cbr\u003e\u003cstrong\u003eStage 2:\u003c\/strong\u003e 20BRFGAC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMains Water\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1:\u003c\/strong\u003e 20BDGD-PA\u003cbr\u003e\u003cstrong\u003eStage 2:\u003c\/strong\u003e 20BKDF-GAC\u003c\/p\u003e\n\u003cp\u003eAfter installation, slowly restore water pressure, check all connections for leaks and flush new cartridges appropriately before normal use.\u003c\/p\u003e\n\u003ch2\u003eMaintenance\u003c\/h2\u003e\n\u003cp\u003eThe Pentair twin system uses replaceable \u003cstrong\u003e20\" Jumbo filter cartridges\u003c\/strong\u003e, allowing the housings and mounting assembly to remain installed during routine servicing.\u003c\/p\u003e\n\u003cp\u003eCartridge replacement frequency will depend on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncoming water quality\u003c\/li\u003e\n\u003cli\u003eSediment loading\u003c\/li\u003e\n\u003cli\u003eWater consumption\u003c\/li\u003e\n\u003cli\u003eCartridge type\u003c\/li\u003e\n\u003cli\u003eTreatment requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplace cartridges when treatment performance declines, flow becomes excessively restricted or the applicable cartridge reaches its recommended service capacity.\u003c\/p\u003e\n\u003cp\u003eThe supplied \u003cstrong\u003ehousing spanner\u003c\/strong\u003e assists with opening the filter housings during cartridge servicing.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003ch3\u003eHousing Only\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 × Pentair 20BWH 20\" Jumbo filter housings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eStainless steel bracket\u003c\/li\u003e\n\u003cli\u003eBall valve\u003c\/li\u003e\n\u003cli\u003eHousing spanner\u003c\/li\u003e\n\u003cli\u003eAssembled twin filtration system\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNo filter cartridges\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRainwater\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 × Pentair 20BWH 20\" Jumbo filter housings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eStainless steel bracket\u003c\/li\u003e\n\u003cli\u003eBall valve\u003c\/li\u003e\n\u003cli\u003eHousing spanner\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 20BDGD-PA Dual Gradient 25-to-1 Micron Sediment Cartridge\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 20BRFGAC Radial Flow Granular Activated Carbon Cartridge\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMains Water\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2 × Pentair 20BWH 20\" Jumbo filter housings\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eStainless steel bracket\u003c\/li\u003e\n\u003cli\u003eBall valve\u003c\/li\u003e\n\u003cli\u003eHousing spanner\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 20BDGD-PA Dual Gradient 25-to-1 Micron Sediment Cartridge\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 20BKDF-GAC KDF\/GAC Cartridge\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat are the three options?\u003c\/h3\u003e\n\u003cp\u003eChoose from:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHousing Only\u003c\/strong\u003e — twin 20\" Jumbo housing system without cartridges.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRainwater\u003c\/strong\u003e — twin system with 20BDGD-PA and 20BRFGAC cartridges.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMains Water\u003c\/strong\u003e — twin system with 20BDGD-PA and 20BKDF-GAC cartridges.\u003c\/p\u003e\n\u003ch3\u003eAre cartridges included with the Housing Only option?\u003c\/h3\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eHousing Only configuration does not include filter cartridges\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt allows you to select compatible 20\" Jumbo cartridges based on your own filtration requirements.\u003c\/p\u003e\n\u003ch3\u003eWhich option should I choose for tank water?\u003c\/h3\u003e\n\u003cp\u003eChoose the \u003cstrong\u003eRainwater\u003c\/strong\u003e option.\u003c\/p\u003e\n\u003cp\u003eIt combines \u003cstrong\u003e25-to-1 micron dual gradient sediment filtration with radial flow granular activated carbon treatment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich option should I choose for town water?\u003c\/h3\u003e\n\u003cp\u003eChoose the \u003cstrong\u003eMains Water\u003c\/strong\u003e option.\u003c\/p\u003e\n\u003cp\u003eIt combines \u003cstrong\u003e25-to-1 micron dual gradient sediment filtration with KDF\/GAC treatment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat cartridges are included with the Rainwater option?\u003c\/h3\u003e\n\u003cp\u003eThe Rainwater configuration includes:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BDGD-PA — Dual Gradient 25-to-1 Micron Sediment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BRFGAC — Radial Flow Granular Activated Carbon\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat cartridges are included with the Mains Water option?\u003c\/h3\u003e\n\u003cp\u003eThe Mains Water configuration includes:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BDGD-PA — Dual Gradient 25-to-1 Micron Sediment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20BKDF-GAC — KDF\/GAC\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat does the 20BDGD-PA cartridge do?\u003c\/h3\u003e\n\u003cp\u003eThe 20BDGD-PA provides progressive \u003cstrong\u003e25-to-1 micron sediment filtration\u003c\/strong\u003e, capturing larger sediment first before progressively treating finer particles.\u003c\/p\u003e\n\u003ch3\u003eWhat does the 20BRFGAC cartridge do?\u003c\/h3\u003e\n\u003cp\u003eThe 20BRFGAC provides a \u003cstrong\u003eradial flow granular activated carbon treatment stage\u003c\/strong\u003e following sediment filtration.\u003c\/p\u003e\n\u003ch3\u003eWhat does the 20BKDF-GAC cartridge do?\u003c\/h3\u003e\n\u003cp\u003eThe 20BKDF-GAC combines \u003cstrong\u003eKDF media with granular activated coconut shell carbon\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt provides chlorine, taste and odour treatment, while the KDF media helps inhibit scale buildup within the filter. It also incorporates a 5 micron spun-bonded polypropylene post-filter.\u003c\/p\u003e\n\u003ch3\u003eWhat size cartridges does the system use?\u003c\/h3\u003e\n\u003cp\u003eThe system is designed around \u003cstrong\u003e20\" Jumbo \/ Big Blue format cartridges\u003c\/strong\u003e compatible with the Pentair 20BWH housings.\u003c\/p\u003e\n\u003ch3\u003eCan I choose my own cartridges?\u003c\/h3\u003e\n\u003cp\u003eYes. Select \u003cstrong\u003eHousing Only\u003c\/strong\u003e if you want to build your own two-stage filtration combination.\u003c\/p\u003e\n\u003ch3\u003eIs the system assembled?\u003c\/h3\u003e\n\u003cp\u003eYes. The system is supplied as an \u003cstrong\u003eassembled whole-house filter system\u003c\/strong\u003e consisting of two 20BWH housings with a stainless steel bracket, ball valve and spanner.\u003c\/p\u003e\n\u003ch3\u003eDoes it include a stainless steel bracket?\u003c\/h3\u003e\n\u003cp\u003eYes. The twin housings are supplied with a \u003cstrong\u003estainless steel mounting bracket\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs a housing spanner included?\u003c\/h3\u003e\n\u003cp\u003eYes. A housing spanner is included to assist with servicing and cartridge replacement.\u003c\/p\u003e\n\u003ch3\u003eCan I change the cartridge combination later?\u003c\/h3\u003e\n\u003cp\u003eYes. The housings use replaceable 20\" Jumbo cartridges, allowing the filtration media to be changed as your requirements change.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Housing Only","offer_id":45233355653164,"sku":"20BWH-TWIN","price":701.5,"currency_code":"NZD","in_stock":true},{"title":"Rainwater","offer_id":45233355685932,"sku":"20BWH-TWIN(GAC)","price":943.0,"currency_code":"NZD","in_stock":true},{"title":"Mains Water","offer_id":45233355718700,"sku":"20BWH-TWIN(KDF)","price":1058.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/20BWH-TWIN-1000x1000.webp?v=1769637503","url":"https:\/\/www.filtrationstation.co.nz\/products\/pentair-20-inch-jumbo-twin-filter-system","provider":"Filtration Station NZ","version":"1.0","type":"link"}