{"product_id":"hf4h21-01m-elite-aseptic-spa-filter-cartridge-replacement-for-pleatco-ptl18p4-unicel-4ch-21-filbur-fc-121","title":"Elite Aseptic Spa Filter Cartridge Replacement For Unicel 4CH-21 Pleatco PTL18P4","description":"\u003cdiv\u003e\n\u003ch1\u003eElite Aseptic Spa Filter Cartridge Replacement HF4H21-01M\u003c\/h1\u003e\n\u003cp\u003eUpgrade your spa filtration with the Elite Aseptic HF4H21-01M cartridge, a direct replacement for Unicel 4CH-21 and Pleatco PTL18P4. Compatible with Filbur FC-0121 and Pageant Spa Top Load models, this USA-made cartridge features turquoise end caps and advanced aseptic media for reliable, sanitary filtration. It measures 8 inches long, 4.625 inches in outer diameter, with a bottom 1.5-inch threaded connection and a convenient top handle for easy installation and removal.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacement compatibility: Directly replaces Unicel 4CH-21, Pleatco PTL18P4, Filbur FC-0121, and Pageant Top Load models.\u003c\/li\u003e \u003cli\u003ePrecise dimensions: 8 in L, 4.625 in OD, bottom 1.5 in threaded; designed for standard spa housings.\u003c\/li\u003e \u003cli\u003eTurquoise end caps: Exclusive turquoise ends ensure durable seals and quick visual verification.\u003c\/li\u003e \u003cli\u003eElite aseptic media: Point-bond filtration offers tighter filtration than trilobal or nonwoven media.\u003c\/li\u003e \u003cli\u003eMax Flow cores: Engineered for higher flow with reduced pressure drop for efficient filtration.\u003c\/li\u003e \u003cli\u003eMade in the USA: Domestic production and warehousing support quality control and responsive service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose this Hurricane HF4H21-01M cartridge for consistent performance, longer life, and straightforward maintenance. Add to cart now to upgrade your spa’s filtration and enjoy clearer, safer water with less hassle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hurricane Pool Filters","offers":[{"title":"Default Title","offer_id":52023968104765,"sku":"HF4H21-01M","price":31.19,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/3611\/6541\/files\/1_d995a2d6-6c81-408f-96f0-b40769e9236e.jpg?v=1784883526","url":"https:\/\/www.duckiespoolsupply.com\/products\/hf4h21-01m-elite-aseptic-spa-filter-cartridge-replacement-for-pleatco-ptl18p4-unicel-4ch-21-filbur-fc-121","provider":"Duckies Pool Supply","version":"1.0","type":"link"}