{"product_id":"ispring-fc15b-high-capacity-5-micron-cto-carbon-block-filter-10x4-5-for-under-sink-whole-house","title":"iSpring FC15B High Capacity 5-Micron CTO Carbon Block Filter - 10x4.5 for Under Sink \u0026 Whole House","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet the iSpring FC15B carbon block filter, a high-capacity CTO cartridge designed for both under-sink and whole-house filtration. Built with premium activated carbon, it’s engineered to support consistent water quality across taps while fitting in standard 10x4.5 inch housings. This cartridge is individually sealed to maintain freshness and ensure easy storage when not in use.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cp\u003eWhile results depend on your water quality, the FC15B focuses on chlorine reduction, taste and odor improvement, and the mitigation of common organic compounds. Expect crisper water and a more balanced flavor as you continue to filter at home.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces free chlorine, improving taste and odor\u003c\/li\u003e\n  \u003cli\u003eTargets organic compounds including herbicides and solvents\u003c\/li\u003e\n  \u003cli\u003eHelps mitigate trihalomethanes (THMs) and other contaminants\u003c\/li\u003e\n  \u003cli\u003eSupports steady flow for reliable filtration at home\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLongevity and maintenance\u003c\/h3\u003e\n\u003cp\u003eDesigned for long life, the FC15B can filter up to about 50,000 gallons depending on input water. For optimal performance, replace the cartridge every 6 months or after the recommended volume.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLong filter life up to 50,000 gallons\u003c\/li\u003e\n  \u003cli\u003eTypically used as the second stage in whole-house systems\u003c\/li\u003e\n  \u003cli\u003eIndividually sealed to preserve freshness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility and installation details\u003c\/h3\u003e\n\u003cp\u003eOfficial replacement for iSpring systems including US21B under-sink filters and WGB21B family units. It also fits other standard 10x4.5 inch housings, making it a versatile choice for multi-point filtration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOfficial replacement for US21B, WGB21B, WGB21BM, and WGB21B-PB\u003c\/li\u003e\n  \u003cli\u003eFits standard 10x4.5 inch housings\u003c\/li\u003e\n  \u003cli\u003eIndividually sealed for freshness and easy storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose iSpring FC15B\u003c\/h3\u003e\n\u003cp\u003eCrafted from premium coconut shell carbon and a tightly packed CTO block, this cartridge emphasizes filtration efficiency and durable performance. It’s free of surfactants, binders, and adhesives, with no carbon ash leaching, and it’s backed by iSpring support for added peace of mind.\u003c\/p\u003e\n\u003cp\u003eNote: Actual performance depends on your source water and system setup. The FC15B is designed to support cleaner-tasting water at every faucet while aligning with common 10x4.5 inch housing standards.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What systems is the iSpring FC15B compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits standard 10x4.5 inch filters and works as the second stage for US21B or as the first stage for WGB21B family.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: When should I replace the FC15B filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace every 6 months or after about 50,000 gallons, depending on water quality and usage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"iSpring","offers":[{"title":"Default Title","offer_id":47502064681134,"sku":"B01M0DVV2B","price":99.11,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/6012\/9710\/files\/ispring-fc15b-carbon-block-filter-10x4-5-under-sink.jpg?v=1770970229","url":"https:\/\/handyskook.ca\/products\/ispring-fc15b-high-capacity-5-micron-cto-carbon-block-filter-10x4-5-for-under-sink-whole-house","provider":"HandySkook","version":"1.0","type":"link"}