{"product_id":"cryspool-spa-filter-75-sq-ft-replacement-cartridge-20-1-8-x-4-15-16-fits-c-4975-prb75-washable-trilobal-media","title":"Cryspool Spa Filter 75 sq ft Replacement Cartridge 20-1\/8\" x 4-15\/16\" – Fits C-4975\/PRB75, Washable Trilobal Media","description":"\u003cp\u003e\u003cstrong\u003eCryspool 04086 is a 75 sq. ft. replacement spa filter built to match C-4975 and PRB75 specifications for reliable debris capture and easy cleaning.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis cartridge is engineered to fit a wide range of hot tubs and spas that require a 20-1\/8\" length and a 4-15\/16\" outer diameter, providing a cost-effective alternative to several OEM part numbers. Constructed from a multilayer trilobal fiber fabric, the 04086 focuses on increased dirt-holding capacity and repeated washability so the filter maintains flow and extends service life when cared for regularly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat are the exact dimensions and fit details?\u003c\/h3\u003e\n\u003cp\u003eThe Cryspool 04086 measures 20-1\/8\" long with a 4-15\/16\" outer diameter and 2-1\/8\" openings on both ends, offering 75 square feet of filtration surface. These dimensions make it compatible with many top-load pressure and twist-top mount applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLength: 20-1\/8\" (overall)\u003c\/li\u003e\n  \u003cli\u003eOuter diameter: 4-15\/16\"\u003c\/li\u003e\n  \u003cli\u003eTop\/Bottom openings: 2-1\/8\"\u003c\/li\u003e\n  \u003cli\u003eFiltration area: 75 sq. ft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich spa and filter models does it replace?\u003c\/h3\u003e\n\u003cp\u003eThe 04086 is made to be a drop-in replacement for several part numbers used across spa brands. It matches the sizing and sealing geometry of common OEM cartridges so you can swap it into systems that list C-4975, PRB75 and similar numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible references: C-4975, PRB75, FC-2395, R173435, 17-2632\u003c\/li\u003e\n  \u003cli\u003eWorks with Rainbow RTL-75 and Rainbow Dynamic 75 systems\u003c\/li\u003e\n  \u003cli\u003eFits various models from Nahani\/MAAX, Hydro Pool, Emerald, Dakota and other spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the material and construction affect performance?\u003c\/h3\u003e\n\u003cp\u003eCryspool uses a trilobal fiber fabric that creates more surface area and deeper pleat capacity than standard point-bond media. This structure captures finer particles and resists compaction, allowing water to pass freely while trapping debris for longer between cleanings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTrilobal fibers increase dirt-holding ability\u003c\/li\u003e\n  \u003cli\u003ePleated construction expands filtration area to 75 sq. ft.\u003c\/li\u003e\n  \u003cli\u003eDurable end caps and pleat support reduce deformation under pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance steps keep the filter working longer?\u003c\/h3\u003e\n\u003cp\u003eThe filter is designed for repeated rinsing and can be restored close to new performance when cleaned properly. Rinse with a high-pressure hose and use a cleaning soak when needed; replace only when physical damage or irreversible clogging appears.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse pleats with a strong spray; clean when gauge indicates higher pressure\u003c\/li\u003e\n  \u003cli\u003eSoak periodically with a cartridge cleaner for oils and mineral buildup\u003c\/li\u003e\n  \u003cli\u003eInspect end caps and pleat integrity during each cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Cryspool 04086 is aimed at spa owners and maintenance technicians who need a durable, washable 75 sq. ft. cartridge compatible with many C-4975\/PRB75 applications. It suits anyone looking to maintain optimal flow and filtration without relying on OEM-only parts, provided they follow routine cleaning and inspection to maximize service life.\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: Does Cryspool 04086 fit my PRB75 spa?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—if your spa uses cartridges with 20-1\/8\" length, 4-15\/16\" outer diameter and 2-1\/8\" end openings, the 04086 is compatible with PRB75-style housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I clean this filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rinse when the pressure gauge rises, and deep-clean with a soak every few months depending on use and water conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Cryspool","offers":[{"title":"Default Title","offer_id":56799327355220,"sku":"B0BHHV5J2K","price":99.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/cryspool-04086-front-view.jpg?v=1786731283","url":"https:\/\/gardenluxe.co.uk\/products\/cryspool-spa-filter-75-sq-ft-replacement-cartridge-20-1-8-x-4-15-16-fits-c-4975-prb75-washable-trilobal-media","provider":"Gardenluxe Uk","version":"1.0","type":"link"}