{"product_id":"aqualtra-hot-tub-filter-cartridge-pdm28-2-pack-28-sq-ft-5-5-x-7-25-in-nsf-pet-media","title":"AQUALTRA Hot Tub Filter Cartridge PDM28 2-Pack — 28 sq.ft., 5.5 x 7.25 in, NSF PET Media","description":"\u003cp\u003e\u003cstrong\u003eAQUALTRA PDM28 is a drop-in hot tub filter cartridge (28 sq.ft., 5½\" x 7¼\") designed to replace Dream Maker 461273, FC-9944, SD-01392 and similar models, sold here as a convenient two-pack.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you own a compatible hot tub or spa, keeping water clear and pumps running efficiently depends on timely filter replacement. These AQUALTRA cartridges are constructed from NSF-certified PET composite media with chlorine-resistant end caps and a polypropylene core, giving you a BPA-free option that fits common PDM28-style housings. The pack includes two identical filters sized for a 3\" top and bottom opening and a 28 square-foot filtration area, intended for easy swap-in replacement and regular cleaning.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter improve water clarity?\u003c\/h3\u003e\n\u003cp\u003eThe cartridge captures solids that would otherwise cloud your spa, from hair and skin cells to leaves and sand. Its layered PET composite fabric and \"dirt-locking\" design increase contaminant retention compared with basic paper-style cartridges, helping the circulation system run cleaner between cleanings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e28 sq.ft. filtration surface for more debris capture\u003c\/li\u003e\n  \u003cli\u003eMulti-layer PET media with enhanced dirt-locking action\u003c\/li\u003e\n  \u003cli\u003eFits standard PDM28-type housings to maintain pump efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my hot tub or spa model?\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing cartridge to confirm compatibility: 5½\" outer diameter, 7¼\" length, and 3\" openings at top and bottom. AQUALTRA lists compatibility with PDM28, Dream Maker 461273, FC-9944 (FC9944), SD-01392 and many 2015-or-newer Aquarest spa models, but matching dimensions is the most reliable method.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOuter diameter: 5.5 inches; length: 7.25 inches\u003c\/li\u003e\n  \u003cli\u003eTop and bottom openings: 3 inches each\u003c\/li\u003e\n  \u003cli\u003eCompatible with commonly referenced part numbers (used for reference only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I clean and maintain these cartridges?\u003c\/h3\u003e\n\u003cp\u003eThese filters are washable and reusable: rinse debris with a garden hose and occasionally use a filter-cleaning solution or soak for deeper cleaning. Remove the filter before scrubbing or using chemicals to avoid corrosion of other spa components, and follow a two-week cleaning cadence for regular use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse with a hose after each heavy use\u003c\/li\u003e\n  \u003cli\u003eSoak in filter cleaner monthly or as needed\u003c\/li\u003e\n  \u003cli\u003eRemove filter before any chemical shock treatments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and safety standards does it meet?\u003c\/h3\u003e\n\u003cp\u003eThe cartridge uses BPA-free components, including a polypropylene core and chlorine-resistant end caps, and the filtration media is NSF\/ANSI certified to provide a safer material profile. These construction details reduce the risk of premature degradation and help maintain consistent performance in chlorinated spa water.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNSF\/ANSI-certified PET composite media\u003c\/li\u003e\n  \u003cli\u003eChlorine-resistant end caps for longer life\u003c\/li\u003e\n  \u003cli\u003eBPA-free construction throughout the cartridge\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This two-pack of AQUALTRA PDM28 replacement cartridges is intended for hot tub and spa owners who need a drop-in, reusable filter that matches PDM28-size housings. It’s well suited to people who perform regular maintenance, want NSF-certified materials, and prefer a cost-effective, washable alternative to one-time-use filters. Confirm dimensions and part-fitment before purchase to ensure proper compatibility with your spa model.\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: How often should I replace these cartridges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace based on condition and usage: typically every 12–24 months, or sooner if damaged or permanently stained.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these with chlorinated spas?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They have chlorine-resistant end caps and NSF-certified PET media for use in chlorinated hot tubs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AQUALTRA","offers":[{"title":"Default Title","offer_id":56832818184532,"sku":"B0CRB3PM7Y","price":65.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/aqualtra-front-packaging-pdm28.jpg?v=1787034216","url":"https:\/\/gardenluxe.co.uk\/products\/aqualtra-hot-tub-filter-cartridge-pdm28-2-pack-28-sq-ft-5-5-x-7-25-in-nsf-pet-media","provider":"Gardenluxe Uk","version":"1.0","type":"link"}