{"product_id":"darlly-spa-pool-filter-cartridge-70521-52-sq-ft-7ch552-replacement-for-spa-and-pool-systems-durable","title":"Darlly Spa Pool Filter Cartridge 70521 52 Sq Ft 7CH552 Replacement For Spa And Pool Systems Durable","description":"\u003cdiv\u003e\n\u003cp\u003eElevate your spa or pool filtration with the Darlly Spa\/Pool Filter Cartridge 70521 (also listed as 7CH-552, FC-0465, PTL55XW-F2M). This private-labeled replacement cartridge is designed to deliver reliable, high-performance filtration when you need it most, so you can enjoy crystal-clear water with less hassle.\u003c\/p\u003e \u003ch2\u003eWhy this cartridge stands out\u003c\/h2\u003e\n\u003cp\u003eWith 52 square feet of filtration media and a compact 7-inch diameter by 10-1\/2-inch length, this cartridge maximizes contact with contaminants while fitting a wide range of standard housings. The top and bottom end caps feature a semi-circular handle and 2-inch male thread (MPT), ensuring a secure, straightforward installation and a snug seal that minimizes bypass and leaks. The bottom side uses a male pipe thread (MPT) connection, adding compatibility across popular spa and pool filter systems.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel \/ compatibility:\u003c\/strong\u003e 70521 (also listed as 7CH-552, FC-0465, PTL55XW-F2M)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFiltration area:\u003c\/strong\u003e 52 sq ft\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMedia type:\u003c\/strong\u003e 3 oz pleated filtration media\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7\" outer diameter, 10-1\/2\" length\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnd caps \/ connections:\u003c\/strong\u003e Top \u0026amp; bottom semi-circular handles with 2\" MPT threads; bottom style is MPT; bottom outer diameter approx. 2-3\/8\"\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Designed for spa and pool filter housings that accommodate 7\" x 10.5\" cartridges with 2\" MPT fittings\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems this cartridge solves\u003c\/h3\u003e\n\u003cp\u003eBy delivering 52 sq ft of filtration media, this cartridge traps more dirt, oils, and debris in a single pass, helping maintain clearer water, balanced chemistry, and consistent pump flow. The robust pleated design improves dirt-holding capacity, reduces the frequency of filter cleanings, and supports longer filter life between replacements.\u003c\/p\u003e \u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eOwners of spas and above-ground pools who use standard 7\" x 10-1\/2\" filter housings\u003c\/li\u003e \u003cli\u003eHousings that require 2\" MPT threaded connections on both ends\u003c\/li\u003e \u003cli\u003eReplacement cartridges seeking a reliable, private-labeled option with broad compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and maintenance tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRinse the cartridge under clean water before first use to remove any manufacturing dust and to activate the filtration surface.\u003c\/li\u003e \u003cli\u003eInspect threads and seals before installation to ensure a tight, leak-free fit.\u003c\/li\u003e \u003cli\u003eInsert the cartridge with the same orientation as the original design, then hand-tighten the connections—avoid overtightening.\u003c\/li\u003e \u003cli\u003eMonitor water clarity and pressure; replace the cartridge when flow slows or clarity declines to preserve pump efficiency and filter performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Darlly 70521 filter cartridge for a dependable, high-capacity filtration solution that aligns with your spa or pool’s standard 7\" x 10.5\" cartridge specifications. It’s a practical, market-tested option that helps you maintain clean, inviting water with less frequent maintenance.\u003c\/p\u003e \u003cbr\u003e \u003ctable class=\"margintop4\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl0_labelAttributeName\"\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl0_labelAttributeValue\"\u003eDimension One\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl1_labelAttributeName\"\u003eBottom Physical Dimension\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl1_labelAttributeValue\"\u003e2-3\/8\"od\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl2_labelAttributeName\"\u003eBottom Style\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl2_labelAttributeValue\"\u003eMale Pipe Thread (mpt)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl3_labelAttributeName\"\u003eDiameter\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl3_labelAttributeValue\"\u003e7\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl4_labelAttributeName\"\u003eLength\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl4_labelAttributeValue\"\u003e10-1\/2\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl5_labelAttributeName\"\u003eMedia Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl5_labelAttributeValue\"\u003e3oz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl6_labelAttributeName\"\u003eSquare Footage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl6_labelAttributeValue\"\u003e52 sq ft\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl7_labelAttributeName\"\u003eTop Style\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan id=\"_ctl0__ctl0_listviewSpecificationAttributes_ctrl7_labelAttributeValue\"\u003eHandle\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Darlly","offers":[{"title":"Default Title","offer_id":40331546230826,"sku":"70521","price":42.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/4014\/1354\/files\/FC-0465.jpg?v=1769976108","url":"https:\/\/bathparts.com\/en-um\/products\/darlly-spa-pool-filter-cartridge-70521-52-sq-ft-7ch552-replacement-for-spa-and-pool-systems-durable","provider":"Bath \u0026 Spa Superstore","version":"1.0","type":"link"}