{"product_id":"savener-prb50-in-50-sq-ft-spa-filter-cartridge-2-pack-compatible-with-unicel-c-4950-trilobal-fiber-for-fine-particle-capture","title":"Savener PRB50-In 50 sq. ft. Spa Filter Cartridge 2-Pack — Compatible with Unicel C-4950, Trilobal Fiber for Fine Particle Capture","description":"\u003cb\u003eSavener PRB50-In is a 50 sq. ft. replacement spa and hot tub filter cartridge engineered to fit Unicel C-4950, Filbur FC-2390 and other listed models, supplied here as a convenient 2-pack.\u003c\/b\u003e\n\n\u003cp\u003eKeep spa water clear and circulation efficient with replacement cartridges designed for reliable performance. The Savener PRB50-In uses a trilobal fiber media and high-density polyester to trap fine particles while resisting premature wear. These cartridges match the physical dimensions and inlet\/outlet openings of popular OEM filters so they drop into existing filter housings without modification.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter improve water clarity and flow?\u003c\/h3\u003e\n\u003cp\u003eThe Savener PRB50-In combines a unique trilobal fiber structure with a highly uniform media to capture smaller debris and reduce clogging. Better particle capture helps maintain steady pump flow between cleanings, which supports heater and circulation efficiency. The sturdy free-flow core resists collapse under pressure, so the cartridge keeps its shape even during heavy filtration cycles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e50 square feet of filtering area for extended dirt-holding capacity\u003c\/li\u003e\n\u003cli\u003eTrilobal polyester fibers capture fine particulates and sediments\u003c\/li\u003e\n\u003cli\u003eHigh-strength core preserves flow and resists deformation\u003c\/li\u003e\n\u003cli\u003eFits common OEM housings for straightforward replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these cartridges fit my spa or hot tub?\u003c\/h3\u003e\n\u003cp\u003eThese Savener cartridges are sized to the common PRB50-IN form factor and match measurements of many OEM equivalents. The listed dimensions—13-5\/16\" length, 4-15\/16\" outside diameter, and 2-1\/8\" open top and bottom—help you confirm compatibility before ordering. They’re explicitly compatible with Unicel C-4950, Guardian 413-212-02, Filbur FC-2390 and several other models noted by manufacturers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 13-5\/16\" — check against your current cartridge\u003c\/li\u003e\n\u003cli\u003eOuter diameter: 4-15\/16\" — ensures proper seating in the canister\u003c\/li\u003e\n\u003cli\u003eTop \u0026amp; bottom openings: 2-1\/8\" open — matches inlet\/outlet interfaces\u003c\/li\u003e\n\u003cli\u003eReplacement cross-reference list included for quick verification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I clean and maintain Savener PRB50-In filters?\u003c\/h3\u003e\n\u003cp\u003eRoutine cleaning prolongs filter life and helps the cartridge perform at its best. Rinse weekly with clean water to remove loose debris and perform a deeper chemical or detergent soak every few months depending on usage and water chemistry. Proper drying and storage when not in use will prevent mildew and maintain fiber integrity.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRinse with fresh water weekly to remove surface debris\u003c\/li\u003e\n\u003cli\u003eUse a filter cleaner soak periodically for oily residue\u003c\/li\u003e\n\u003cli\u003eInspect for tears, crushed pleats or permanent staining before reinstalling\u003c\/li\u003e\n\u003cli\u003eRotate replacement on a schedule based on usage and water clarity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key build and material features to expect?\u003c\/h3\u003e\n\u003cp\u003eSavener builds these cartridges from high-density polyester media formed into a trilobal fiber structure for improved capture and longevity. The pleated design increases surface area while the engineered core provides structural stability. Together these elements reduce wasted filtering area and offer a longer working life than many economy replacements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDurable, high-density polyester media for improved lifespan\u003c\/li\u003e\n\u003cli\u003eTrilobal fibers for enhanced particle capture\u003c\/li\u003e\n\u003cli\u003eScientifically designed free-flow core for strength and circulation\u003c\/li\u003e\n\u003cli\u003eManufactured to industry specifications for reliable fit and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Savener PRB50-In cartridges suit spa and hot tub owners who need dependable, OEM-compatible replacements that balance filtration area with durable construction. Choose this 2-pack if you want a straightforward swap for Unicel C-4950, Filbur FC-2390, Guardian 413-212-02 and similar models, or if you maintain multiple tubs and prefer having a spare filter on hand.\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 this cartridge fit Unicel C-4950?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Savener PRB50-In matches the Unicel C-4950 dimensions and openings for direct replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I clean these spa filters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rinse weekly and perform a deep cleaner soak every few months, depending on usage and water conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Savener","offers":[{"title":"Default Title","offer_id":56831195087188,"sku":"B08V8LJVYR","price":77.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/savener-prb50in-front-view-packaging.jpg?v=1787012741","url":"https:\/\/gardenluxe.co.uk\/products\/savener-prb50-in-50-sq-ft-spa-filter-cartridge-2-pack-compatible-with-unicel-c-4950-trilobal-fiber-for-fine-particle-capture","provider":"Gardenluxe Uk","version":"1.0","type":"link"}