{"product_id":"annual-filter-kit","title":"Vertex IsoTwist Annual RO Replacement Filter Kit","description":"\u003ch3 data-end=\"205\" data-start=\"146\" style=\"text-align: center;\"\u003eKeep Your IsoTwist System Running Like New. Replace Filters in Minutes\u003c\/h3\u003e\n\u003cp data-end=\"120\" data-start=\"102\" data-section-id=\"14o11cl\"\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"524\" data-start=\"121\"\u003e\n\u003cli data-end=\"190\" data-start=\"121\" data-section-id=\"rmio94\"\u003eComplete annual filter kit for IsoTwist 4- and 5-stage Reverse Osmosis (RO systems)\u003c\/li\u003e\n\u003cli data-end=\"238\" data-start=\"191\" data-section-id=\"nbk1wn\"\u003eRestores water taste and system performance\u003c\/li\u003e\n\u003cli data-end=\"300\" data-start=\"239\" data-section-id=\"113bbwt\"\u003eTwist-off cartridges install in minutes—no tools, no mess\u003c\/li\u003e\n\u003cli data-end=\"359\" data-start=\"301\" data-section-id=\"1yqamxc\"\u003eProtects RO membrane by removing sediment and chlorine\u003c\/li\u003e\n\u003cli data-end=\"418\" data-start=\"360\" data-section-id=\"1at2p7f\"\u003eMaintains consistent water flow and filtration quality\u003c\/li\u003e\n\u003cli data-end=\"481\" data-start=\"419\" data-section-id=\"35iq0f\"\u003eOEM replacement filters for guaranteed fit and performance\u003c\/li\u003e\n\u003cli data-end=\"524\" data-start=\"482\" data-section-id=\"18yo1k2\"\u003eSimple yearly maintenance—no guesswork\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"586\" data-start=\"531\" data-section-id=\"1n5hlh9\"\u003e\u003cstrong\u003eBuilt for Clean Water and Reliable RO Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"685\" data-start=\"588\"\u003eDesigned for Vertex IsoTwist system owners who rely on consistent, high-quality drinking water.\u003c\/p\u003e\n\u003cp data-end=\"703\" data-start=\"687\"\u003eWorks well in:\u003c\/p\u003e\n\u003cul data-end=\"953\" data-start=\"704\"\u003e\n\u003cli data-end=\"751\" data-start=\"704\" data-section-id=\"19auotq\"\u003eOffices and breakrooms with daily water use\u003c\/li\u003e\n\u003cli data-end=\"797\" data-start=\"752\" data-section-id=\"1wy36za\"\u003eCommercial kitchens and beverage stations\u003c\/li\u003e\n\u003cli data-end=\"842\" data-start=\"798\" data-section-id=\"1mgs87d\"\u003eHomes with RO systems for drinking water\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"843\" data-section-id=\"8g1crq\"\u003eFacilities following scheduled filter maintenance\u003c\/li\u003e\n\u003cli data-end=\"953\" data-start=\"897\" data-section-id=\"1jo2egd\"\u003eLocations where water taste and quality matter daily\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"995\" data-start=\"960\" data-section-id=\"o1io63\"\u003eMulti-Stage Filtration System\u003c\/h3\u003e\n\u003cp data-end=\"1067\" data-start=\"997\"\u003eEach kit replaces all pre- and post-filters in your IsoTwist system.\u003c\/p\u003e\n\u003cp data-end=\"1110\" data-start=\"1069\"\u003e\u003cstrong data-end=\"1108\" data-start=\"1069\"\u003e4-Stage System (FK-112 — 3 Filters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1374\" data-start=\"1111\"\u003e\n\u003cli data-end=\"1194\" data-start=\"1111\" data-section-id=\"1r6gzy\"\u003e\n\u003cstrong\u003eStage 1:\u003c\/strong\u003e Sediment Filter (TF-4113, 5 micron)\u003cbr data-end=\"1160\" data-start=\"1157\"\u003eRemoves dirt, rust, and debris\u003c\/li\u003e\n\u003cli data-end=\"1285\" data-start=\"1195\" data-section-id=\"1k0v7rb\"\u003e\n\u003cstrong\u003eStage 2:\u003c\/strong\u003e Carbon Block Filter (TF-4115, 5 micron)\u003cbr data-end=\"1248\" data-start=\"1245\"\u003eReduces chlorine, taste, and odor\u003c\/li\u003e\n\u003cli data-end=\"1374\" data-start=\"1286\" data-section-id=\"1c391b8\"\u003e\n\u003cstrong\u003eStage 4:\u003c\/strong\u003e Carbon Block Filter (TF-4115, 5 micron)\u003cbr data-end=\"1339\" data-start=\"1336\"\u003eFinal polishing for clean taste\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1417\" data-start=\"1376\"\u003e\u003cstrong data-end=\"1415\" data-start=\"1376\"\u003e5-Stage System (FK-113 — 4 Filters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1624\" data-start=\"1418\"\u003e\n\u003cli data-end=\"1466\" data-start=\"1418\" data-section-id=\"55k2ai\"\u003e\n\u003cstrong\u003eStage 1:\u003c\/strong\u003e Sediment Filter (TF-4113, 5 micron)\u003c\/li\u003e\n\u003cli data-end=\"1518\" data-start=\"1467\" data-section-id=\"1wnfd85\"\u003e\n\u003cstrong\u003eStage 2:\u003c\/strong\u003e GAC Carbon Filter (TF-4114, 10 micron)\u003c\/li\u003e\n\u003cli data-end=\"1571\" data-start=\"1519\" data-section-id=\"1xhvju5\"\u003e\n\u003cstrong\u003eStage 3: \u003c\/strong\u003eCarbon Block Filter (TF-4115, 5 micron)\u003c\/li\u003e\n\u003cli data-end=\"1624\" data-start=\"1572\" data-section-id=\"18l6w2z\"\u003e\n\u003cstrong\u003eStage 5:\u003c\/strong\u003e Carbon Block Filter (TF-4115, 5 micron)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1652\" data-start=\"1626\"\u003e\u003cstrong data-end=\"1650\" data-start=\"1626\"\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1755\" data-start=\"1653\"\u003e\n\u003cli data-end=\"1693\" data-start=\"1653\" data-section-id=\"174208h\"\u003eAll filters: Replace every 12 months\u003c\/li\u003e\n\u003cli data-end=\"1755\" data-start=\"1694\" data-section-id=\"1717pav\"\u003eRO membrane (sold separately): Replace every 24–36 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1788\" data-start=\"1762\" data-section-id=\"qha1wu\"\u003eOptional Accessories\u003c\/h3\u003e\n\u003cul data-end=\"1895\" data-start=\"1789\"\u003e\n\u003cli data-end=\"1832\" data-start=\"1789\" data-section-id=\"1fwml7q\"\u003e\n\u003ca rel=\"noopener\" title=\"Vertex ISOTwist RO replacement filter\" href=\"https:\/\/purennatural.com\/products\/vertex-isotwist-replacement-50-gpd-reverse-osmosis-membrane\" target=\"_blank\"\u003eIsoTwist RO membrane\u003c\/a\u003e (MHA-4222, 50 GPD)\u003c\/li\u003e\n\u003cli data-end=\"1895\" data-start=\"1833\" data-section-id=\"xqee0k\"\u003eIndividual replacement filters (\u003ca rel=\"noopener\" title=\"Vertex ISOTwist Replacement Sediment Filter\" href=\"https:\/\/purennatural.com\/products\/vertex-isotwist-replacement-sediment-filter-tf-4113\" target=\"_blank\"\u003eTF-4113\u003c\/a\u003e, \u003ca rel=\"noopener\" title=\"Vertex IsoTwist TF-4114 Replacement GAC Carbon Filter\" href=\"https:\/\/purennatural.com\/products\/vertex-isotwist-replacement-gac-carbon-filter-tf4114\" target=\"_blank\"\u003eTF-4114\u003c\/a\u003e, \u003ca rel=\"noopener\" title=\"Vertex TF-4115 IsoTwist Replacement Carbon Block Filter\" href=\"https:\/\/purennatural.com\/products\/vertex-isotwist-replacement-carbon-block-filter-tf-4115?selling_plan=5188419809\" target=\"_blank\"\u003eTF-4115\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1942\" data-start=\"1902\" data-section-id=\"bo6pa8\"\u003eWhy Businesses Choose the Vertex IsoTwist Filter System\u003c\/h3\u003e\n\u003cul data-end=\"2248\" data-start=\"1943\"\u003e\n\u003cli data-end=\"1990\" data-start=\"1943\" data-section-id=\"ja0hpx\"\u003eFast filter changes reduce maintenance time\u003c\/li\u003e\n\u003cli data-end=\"2039\" data-start=\"1991\" data-section-id=\"joiec1\"\u003eOEM filters ensure proper system performance\u003c\/li\u003e\n\u003cli data-end=\"2090\" data-start=\"2040\" data-section-id=\"kk041v\"\u003eNo tools or housings required for installation\u003c\/li\u003e\n\u003cli data-end=\"2134\" data-start=\"2091\" data-section-id=\"1p16qsd\"\u003ePredictable annual replacement schedule\u003c\/li\u003e\n\u003cli data-end=\"2192\" data-start=\"2135\" data-section-id=\"1irrfaj\"\u003eHelps avoid costly system damage from clogged filters\u003c\/li\u003e\n\u003cli data-end=\"2248\" data-start=\"2193\" data-section-id=\"1g6rk6j\"\u003eMaintains consistent water quality across locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"2288\" data-start=\"2255\" data-section-id=\"c01r39\"\u003eHow Many Units Do You Need?\u003c\/h3\u003e\n\u003cp data-end=\"2354\" data-start=\"2290\"\u003eEach IsoTwist system serves a single water source or location.\u003c\/p\u003e\n\u003cp data-end=\"2390\" data-start=\"2356\"\u003e1 system → 1 filter kit per year\u003c\/p\u003e\n\u003cp data-end=\"2403\" data-start=\"2392\"\u003eExamples:\u003c\/p\u003e\n\u003cul data-end=\"2533\" data-start=\"2404\"\u003e\n\u003cli data-end=\"2452\" data-start=\"2404\" data-section-id=\"swr9z9\"\u003eSingle sink or drinking station → 1 kit\/year\u003c\/li\u003e\n\u003cli data-end=\"2493\" data-start=\"2453\" data-section-id=\"155gh6g\"\u003eOffice breakroom system → 1 kit\/year\u003c\/li\u003e\n\u003cli data-end=\"2533\" data-start=\"2494\" data-section-id=\"1oocmt5\"\u003eMultiple systems → 1 kit per system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2573\" data-start=\"2535\"\u003eHeavy usage (high volume water use):\u003c\/p\u003e\n\u003cul data-end=\"2624\" data-start=\"2574\"\u003e\n\u003cli data-end=\"2624\" data-start=\"2574\" data-section-id=\"zdchhq\"\u003eReplace filters more frequently than 12 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"2771\" data-start=\"2737\" data-section-id=\"rh7z3w\"\u003eCompare IsoTwist Filter Kits\u003c\/h3\u003e\n\u003cp data-end=\"2799\" data-start=\"2773\"\u003e\u003cstrong data-end=\"2797\" data-start=\"2773\"\u003eFK-112 (4-Stage Kit)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2884\" data-start=\"2800\"\u003e\n\u003cli data-end=\"2822\" data-start=\"2800\" data-section-id=\"senbfr\"\u003eIncludes 3 filters\u003c\/li\u003e\n\u003cli data-end=\"2855\" data-start=\"2823\" data-section-id=\"50rzvk\"\u003eFor 4-stage IsoTwist systems\u003c\/li\u003e\n\u003cli data-end=\"2884\" data-start=\"2856\" data-section-id=\"54w3or\"\u003eSimpler filtration setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2912\" data-start=\"2886\"\u003e\u003cstrong data-end=\"2910\" data-start=\"2886\"\u003eFK-113 (5-Stage Kit)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"3044\" data-start=\"2913\"\u003e\n\u003cli data-end=\"2935\" data-start=\"2913\" data-section-id=\"18v0kps\"\u003eIncludes 4 filters\u003c\/li\u003e\n\u003cli data-end=\"3002\" data-start=\"2936\" data-section-id=\"1026r5d\"\u003eAdds GAC carbon stage for improved odor and chlorine reduction\u003c\/li\u003e\n\u003cli data-end=\"3044\" data-start=\"3003\" data-section-id=\"8izw4m\"\u003eBest for higher water quality demands\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Vertex","offers":[{"title":"Four-Stage Model (3-filters)","offer_id":32569480806471,"sku":"FK-112","price":112.0,"currency_code":"USD","in_stock":true},{"title":"Five-Stage Model (4-filters)","offer_id":32569480839239,"sku":"FK-113","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0104\/6462\/4698\/files\/vertex-isotwist-annual-ro-replacement-filter-kit-pure-n-natural-systems-4242787.png?v=1773510608","url":"https:\/\/purennatural.com\/products\/annual-filter-kit","provider":"Pure n Natural Systems","version":"1.0","type":"link"}