{"title":"Filbur Pool \u0026 Spa Filters For Sonfarrel\/Martec","description":"\u003cp\u003eFilbur pool and spa filters are renowned for their high-quality construction and efficient filtration capabilities, making them a popular choice for maintaining crystal-clear water in aquatic systems. Filbur filters are designed to capture a wide range of contaminants, including dirt, debris, and fine particles, using advanced filtration media such as pleated polyester or fabric elements. These filters are known for their durability and ease of maintenance, offering features like reinforced end caps and robust filter cores to enhance longevity and performance.\u003c\/p\u003e\n\u003cp\u003eIf you are having difficulty finding the correct replacement filter for your hot tub or pool, please try our \u003ca title=\"Bath \u0026amp; Spa Parts Online Filter Finder\" href=\"\/pages\/filters\"\u003e\u003cstrong\u003eFILTER FINDER\u003c\/strong\u003e\u003c\/a\u003e. You can locate your filter by hot tub brand, the current filter number, by size or by Pleatco, Unicel, Aladdin, or Excel part numbers.\u003c\/p\u003e","products":[{"product_id":"fc-1630","title":"Filbur FC-1630 C-4305 PMT50 Spa\/Pool Filter Cartridge","description":"\u003cp\u003eFilbur FC-1630 C-4305 PMT50 Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, made for systems that require a clean, properly matched cartridge to maintain water clarity and steady circulation. It also references common cartridge cross numbers such as FC-1630, C-4305, PMT50 for easier comparison against the part being replaced. This cartridge is intended for use when the existing filter is worn, damaged, difficult to clean, or no longer supporting normal water flow through the spa or pool equipment.\u003c\/p\u003e\u003cp\u003eWhen selecting a replacement cartridge, always compare the part number, length, outside diameter, inside opening, end-cap style, and any printed cross-reference numbers on the old filter before ordering. A correctly matched cartridge helps reduce strain on the pump, supports better filtration performance, and keeps routine maintenance more predictable.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement filter cartridge for compatible spa and pool filter systems\u003c\/li\u003e\n\u003cli\u003eFilbur Manufacturing model for easier identification and reordering\u003c\/li\u003e\n\u003cli\u003eHelps trap debris and support clean, clear circulating water\u003c\/li\u003e\n\u003cli\u003eUseful when replacing a worn, clogged, cracked, or hard-to-clean cartridge\u003c\/li\u003e\n\u003cli\u003eCompare all dimensions and end-cap details with the original cartridge before purchase\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243687184,"sku":"FC-1630","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/c4305.jpg?v=1486185431"},{"product_id":"fc-1638","title":"Filbur FC-1638 C-7419 PMT100 Spa\/Pool Filter Cartridge","description":"\u003cp\u003eFilbur FC-1638 C-7419 PMT100 Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, made for systems that require a clean, properly matched cartridge to maintain water clarity and steady circulation. It also references common cartridge cross numbers such as FC-1638, C-7419, PMT100 for easier comparison against the part being replaced. This cartridge is intended for use when the existing filter is worn, damaged, difficult to clean, or no longer supporting normal water flow through the spa or pool equipment.\u003c\/p\u003e\u003cp\u003eWhen selecting a replacement cartridge, always compare the part number, length, outside diameter, inside opening, end-cap style, and any printed cross-reference numbers on the old filter before ordering. A correctly matched cartridge helps reduce strain on the pump, supports better filtration performance, and keeps routine maintenance more predictable.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement filter cartridge for compatible spa and pool filter systems\u003c\/li\u003e\n\u003cli\u003eFilbur Manufacturing model for easier identification and reordering\u003c\/li\u003e\n\u003cli\u003eHelps trap debris and support clean, clear circulating water\u003c\/li\u003e\n\u003cli\u003eUseful when replacing a worn, clogged, cracked, or hard-to-clean cartridge\u003c\/li\u003e\n\u003cli\u003eCompare all dimensions and end-cap details with the original cartridge before purchase\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243687632,"sku":"FC-1638","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/17-175-1443_xl.jpg?v=1486185432"},{"product_id":"fc-1660","title":"Filbur FC-1660 C-7416  Spa\/Pool Filter Cartridge","description":"\u003cp\u003eFilbur FC-1660 C-7416  Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, made for systems that require a clean, properly matched cartridge to maintain water clarity and steady circulation. It also references common cartridge cross numbers such as FC-1660, C-7416 for easier comparison against the part being replaced. This cartridge is intended for use when the existing filter is worn, damaged, difficult to clean, or no longer supporting normal water flow through the spa or pool equipment.\u003c\/p\u003e\u003cp\u003eWhen selecting a replacement cartridge, always compare the part number, length, outside diameter, inside opening, end-cap style, and any printed cross-reference numbers on the old filter before ordering. A correctly matched cartridge helps reduce strain on the pump, supports better filtration performance, and keeps routine maintenance more predictable.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement filter cartridge for compatible spa and pool filter systems\u003c\/li\u003e\n\u003cli\u003eFilbur Manufacturing model for easier identification and reordering\u003c\/li\u003e\n\u003cli\u003eHelps trap debris and support clean, clear circulating water\u003c\/li\u003e\n\u003cli\u003eUseful when replacing a worn, clogged, cracked, or hard-to-clean cartridge\u003c\/li\u003e\n\u003cli\u003eCompare all dimensions and end-cap details with the original cartridge before purchase\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243698384,"sku":"FC-1660","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/17-175-1447_xl.jpg?v=1486185437"},{"product_id":"fc-2630","title":"Filbur FC-2630 C-4347 PMT45 Spa\/Pool Filter Cartridge","description":"\u003cp\u003eFilbur FC-2630 C-4347 PMT45 Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, made for systems that require a clean, properly matched cartridge to maintain water clarity and steady circulation. It also references common cartridge cross numbers such as FC-2630, C-4347, PMT45 for easier comparison against the part being replaced. This cartridge is intended for use when the existing filter is worn, damaged, difficult to clean, or no longer supporting normal water flow through the spa or pool equipment.\u003c\/p\u003e\u003cp\u003eWhen selecting a replacement cartridge, always compare the part number, length, outside diameter, inside opening, end-cap style, and any printed cross-reference numbers on the old filter before ordering. A correctly matched cartridge helps reduce strain on the pump, supports better filtration performance, and keeps routine maintenance more predictable.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement filter cartridge for compatible spa and pool filter systems\u003c\/li\u003e\n\u003cli\u003eFilbur Manufacturing model for easier identification and reordering\u003c\/li\u003e\n\u003cli\u003eHelps trap debris and support clean, clear circulating water\u003c\/li\u003e\n\u003cli\u003eUseful when replacing a worn, clogged, cracked, or hard-to-clean cartridge\u003c\/li\u003e\n\u003cli\u003eCompare all dimensions and end-cap details with the original cartridge before purchase\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243819152,"sku":"FC-2630","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/17-175-1430_xl.jpg?v=1486185541"},{"product_id":"fc-3530","title":"Filbur FC-3530 C-7415 PLB65 Spa\/Pool Filter Cartridge","description":"\u003cp\u003eThe Filbur FC-3530 C-7415 PLB65 Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, selected for customers who need a clean, dependable cartridge for routine water filtration service. It is listed with the reference identifiers C-7415 PLB65 to help match existing cartridges, filter labels, and cross-reference notes during replacement. This cartridge is a practical replacement option when the current filter is worn, stained, crushed, or no longer rinses clean after normal maintenance.\u003c\/p\u003e\u003cp\u003eUse this cartridge as part of a regular filter maintenance schedule to support better water clarity, improved debris capture, and more consistent flow through the filtration system. Before ordering, compare the part number, length, outside diameter, inside diameter or opening size, end-cap style, and any printed cross-reference numbers on your existing cartridge. Proper fit is important for sealing, circulation, and overall filtration performance.\u003c\/p\u003e\u003cp\u003eThis item is best suited for pool and spa owners, service technicians, and maintenance teams replacing an existing cartridge with a matching Filbur model. Always clean the filter area before installation, seat the cartridge fully, and follow the equipment manufacturer's maintenance guidance for rinse intervals, chemical balance, and replacement timing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFilbur replacement filter cartridge FC-3530 for compatible spa and pool filter applications\u003c\/li\u003e\n\u003cli\u003eHelps trap debris and support clear water when installed in the correct filter housing\u003c\/li\u003e\n\u003cli\u003eUseful for routine maintenance, seasonal replacement, or restoring filtration after a worn cartridge\u003c\/li\u003e\n\u003cli\u003eCompare all dimensions, end-cap style, and cross-reference numbers before ordering\u003c\/li\u003e\n\u003cli\u003eDesigned for easy cartridge replacement during normal pool or spa service\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243890960,"sku":"FC-3530","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/17-175-1848_xl.jpg?v=1486185637"},{"product_id":"fc-6305","title":"Filbur FC-6305 C-4308 POX25-IN Spa\/Pool Filter Cartridge","description":"\u003cp\u003eThe Filbur FC-6305 C-4308 POX25-IN Spa\/Pool Filter Cartridge is a replacement spa and pool filter cartridge from Filbur Manufacturing, selected to help restore steady water flow, dependable filtration, and proper cartridge fit when an existing element is worn, damaged, or due for seasonal replacement. Before ordering, compare the product title, part number, dimensions, and application details against the original part and the equipment documentation. A clean, correctly sized cartridge helps reduce strain on the circulation system, supports better water clarity, and can improve flow through the filter housing. Replacing worn cartridges is especially important when pleats are crushed, end caps are damaged, cleaning no longer restores flow, or water quality becomes harder to maintain. If you are unsure about compatibility, compare photos, measurements, and model information before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine replacement style item from Filbur Manufacturing for compatible filters applications\u003c\/li\u003e\n  \u003cli\u003eCompare the full product title and equipment details before ordering\u003c\/li\u003e\n  \u003cli\u003eDesigned for repair or replacement of the matching original component\u003c\/li\u003e\n  \u003cli\u003eHelps restore proper fit, function, and serviceability when the existing part is worn or damaged\u003c\/li\u003e\n  \u003cli\u003eRecommended for pool, spa, or bath service where compatibility has been verified\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":28243962256,"sku":"FC-6305","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/products\/c4308.jpg?v=1486185718"}],"url":"https:\/\/www.bathandspaparts.com\/collections\/filbur-filters-for-sonfarrel-martec.oembed","provider":"Bath and Spa Parts Online","version":"1.0","type":"link"}