{"product_id":"doule-king-hot-tub-filter-for-unicel-6ch-940-pww50-filbur-fc-0359-1-pack","title":"Doule King Hot Tub Filter for Unicel 6CH-940, PWW50 \u0026 Filbur FC-0359 - 1 Pack","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet the Doule King hot tub filter, a versatile replacement designed to fit popular cartridge models from Unicel, PWW, and Filbur. It supports steady water flow and reliable filtration without requiring a full system change. This unit is compatible with Unicel 6CH-940, PWW50P3 (not PWW50P4), and Filbur FC-0359 assemblies, making it a flexible option for various spa setups.\u003c\/p\u003e\n\u003cp\u003eWith a filtration area of 45 square feet, this cartridge covers a wide surface where contaminants are captured as water passes through. The cartridge features a compact core length and a larger overall length to suit your spa’s housing. The bottom SAE thread and opening dimensions are designed to fit standard hot tub housings, helping ensure a snug, secure seal during operation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose this filter\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFiltration area: 45 sq ft for efficient water cleaning\u003c\/li\u003e\n  \u003cli\u003eDimensions: 8-1\/16\" inner length; total 9-1\/8\"; 5-15\/16\" diameter; 1-7\/16\" opening; bottom SAE 1-1\/2\"\u003c\/li\u003e\n  \u003cli\u003eCompatibility: Unicel 6CH-940, PWW50P3 (not PWW50P4), Filbur FC-0359\u003c\/li\u003e\n  \u003cli\u003eIncluded: 1 filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDurability and filtration performance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThickened advanced trilobal fabric helps capture more contaminants\u003c\/li\u003e\n  \u003cli\u003eEnd caps resist cracking and breakage under spa operating pressure\u003c\/li\u003e\n  \u003cli\u003eEnhanced center core supports the cartridge for longer service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIn daily use, spa owners appreciate how this filter maintains steady flow and clear water during regular soak sessions and after gatherings. It’s designed to be inspected and rinsed between replacements, then swapped out when performance declines.\u003c\/p\u003e\n\n\u003ch3\u003eWhat you get and installation tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 1 filter\u003c\/li\u003e\n  \u003cli\u003eTip: Check model numbers and thread size before installing to ensure a proper fit\u003c\/li\u003e\n  \u003cli\u003eTip: Rinse the cartridge under cool water before first use, and after heavy use to remove debris\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNote: Always verify your filter model and housing to confirm compatibility. This Doule King filter is offered as a flexible option to help keep spa water clean without changing the whole filtration system.\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: Is this filter compatible with Unicel 6CH-940 and PWW50?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it fits Unicel 6CH-940 and PWW50P3 (not PWW50P4), plus Filbur FC-0359 variants; verify your model and thread size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the standout features of this filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Key features include thick trilobal fabric, durable end caps, and a reinforced center core for longer service life.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Doule King","offers":[{"title":"Default Title","offer_id":48178312773876,"sku":"B098L8YCDS","price":24.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/doule-king-hot-tub-filter-6ch-940-fit.jpg?v=1778366355","url":"https:\/\/www.cerapatiogarden.com\/products\/doule-king-hot-tub-filter-for-unicel-6ch-940-pww50-filbur-fc-0359-1-pack","provider":"Cera Garden","version":"1.0","type":"link"}