{"product_id":"hf4637-01-premium-spa-filter-cartridge-replacement-for-pleatco-prb37-in-unicel-c-4637-filbur-fc-2380-rainbow-dynamic-37-series-ii-iii-rtl-25-leisure-bay-spas-1","title":"Hurricane HF4637-01 Premium Spa Filter Cartridge for Pleatco PRB37-IN","description":"\u003cdiv\u003e\n\u003ch1\u003eHurricane HF4637-01 Premium Spa Filter Cartridge\u003c\/h1\u003e\n\u003cp\u003eDrop-in replacement filter cartridge delivering 37 square feet of spa filtration for systems that require Pleatco PRB37-IN. Compatible with Pleatco PRB37-IN, Unicel C-4637, Filbur FC-2380, Rainbow Dynamic 37 (Series I–IV RTL-25), Leisure Bay Spas, Morgan Spas, and Waterway housings. Exclusive turquoise end caps signal Hurricane quality and USA-made construction.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacement compatibility: Replaces Pleatco PRB37-IN and cross references such as Unicel C-4637, Filbur FC-2380, Rainbow Dynamic 37, Series I–IV RTL-25.\u003c\/li\u003e \u003cli\u003ePrecise dimensions: Length 13.3125\", outer diameter 4.9375\", top\/bottom holes 2.125\".\u003c\/li\u003e \u003cli\u003eMedia performance: Premium point-bond filtration delivers tighter capture of biomass, dirt, hair, leaves, and debris than trilobal or nonwoven media.\u003c\/li\u003e \u003cli\u003eFlow design: MAX FLOW core and turquoise end caps optimize water flow and ease of cleaning.\u003c\/li\u003e \u003cli\u003eUSA-made durability: Manufactured in the USA with domestic production and warehousing for longevity and consistent quality.\u003c\/li\u003e \u003cli\u003eCost efficiency: Longer life and easier cleaning reduce replacements and operating costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFinal Thoughts: This drop-in HF4637-01 provides reliable spa filtration with proven cross-compatibility and durable, USA-made construction. Choose it for fewer filter changes and clean water—add to cart now.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hurricane Pool Filters","offers":[{"title":"Default Title","offer_id":52023889330493,"sku":"HF4637-01","price":51.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/3611\/6541\/files\/HF4637-01_283684b8-661b-4cf9-b727-ad9dcb8ec41c.png?v=1784889144","url":"https:\/\/www.duckiespoolsupply.com\/products\/hf4637-01-premium-spa-filter-cartridge-replacement-for-pleatco-prb37-in-unicel-c-4637-filbur-fc-2380-rainbow-dynamic-37-series-ii-iii-rtl-25-leisure-bay-spas-1","provider":"Duckies Pool Supply","version":"1.0","type":"link"}