{"product_id":"nordic-pure-20x25x5-lennox-replacement-merv-15-air-filters-4-pack","title":"Nordic Pure 20x25x5 Lennox Replacement MERV 15 Air Filters - 4 Pack","description":"\u003cp\u003eIn this review of the Nordic Pure 20x25x5 Lennox replacement air filters, the bottom line is simple: this 4 pack is for homeowners or light commercial operators who need high-efficiency filtration and a reliable fit for systems that accept Lennox X6673 or X6675 style media filters. The reviewer found the single biggest reason to buy is the \u003cstrong\u003eMERV 15\u003c\/strong\u003e level filtration that captures fine particulates while maintaining steady airflow in properly sized housings, provided you confirm the actual dimensions first.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActual Size Accuracy:\u003c\/strong\u003e The listed actual size of 19.75 x 24.75 x 4.38 in helps buyers confirm fit before ordering to avoid installation issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox Compatibility:\u003c\/strong\u003e Made to replace Lennox X6673 and X6675 filters, so it fits systems and housings designed for those media filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Filtration Efficiency:\u003c\/strong\u003e Nordic Pure MERV 15 performance is equivalent to MPR 2800, which filters very small particles and improves indoor air quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e Sold as a 4 pack, offering an immediate supply for quarterly or more frequent changes depending on use and environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Manufactured in the United States, which many buyers prefer for perceived quality control and supply reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth Variance Warning:\u003c\/strong\u003e The item clarifies that this traditional 5 filter measures an actual 4 3\/8 in depth, helping avoid mismatches with 4 7\/8 or 5 1\/4 in housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis filter set is aimed at homeowners, renters, and small commercial users with furnaces or air handlers that accept Lennox-style media filters and who want \u003cstrong\u003ehigh-efficiency\u003c\/strong\u003e particle capture for allergy reduction or improved indoor air quality. It is a sensible choice for anyone who measures their existing filter or housing and confirms the actual 19.75 x 24.75 x 4.38 in dimensions.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for buyers who cannot confirm the actual depth and face dimensions of their filter slot, or for systems requiring the thicker 4 7\/8 in or 5 1\/4 in media. Those users should measure carefully or select a filter explicitly matching the alternate actual depth.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-efficiency \u003cstrong\u003eMERV 15\u003c\/strong\u003e filtration captures fine dust and improves air quality.\u003c\/li\u003e\n\u003cli\u003eDesigned to replace Lennox X6673\/X6675, making it easy to swap into compatible systems.\u003c\/li\u003e\n\u003cli\u003eMade in the USA and sold as a convenient 4 pack for multiple changes.\u003c\/li\u003e\n\u003cli\u003eClear actual size listing reduces risk of ordering the wrong fit if you measure first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eActual depth is 4 3\/8 in which can cause fit issues if your housing expects a different nominal 5 in or deeper media.\u003c\/li\u003e\n\u003cli\u003eSome customers reported mixed opinions on build quality, so expectations should be tempered for heavier commercial use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNordic Pure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Size\u003c\/td\u003e\n\u003ctd\u003e20 x 25 x 5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Size\u003c\/td\u003e\n\u003ctd\u003e19.75 x 24.75 x 4.38 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERV Rating\u003c\/td\u003e\n\u003ctd\u003eMERV 15 (equivalent to MPR 2800)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eLennox X6673, X6675\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufactured\u003c\/td\u003e\n\u003ctd\u003eMade in the USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor anyone with a compatible Lennox-style housing who measures and confirms the actual 19.75 x 24.75 x 4.38 in dimensions, this Nordic Pure 4 pack is a practical, high-efficiency choice. It delivers \u003cstrong\u003eMERV 15\u003c\/strong\u003e level capture and good value for regular replacement cycles, though buyers should verify depth compatibility before ordering.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this filter fit my furnace?\u003c\/strong\u003e\u003cbr\u003eMeasure your current filter or housing and compare to the listed actual size of 19.75 x 24.75 x 4.38 in to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow efficient is the filtration?\u003c\/strong\u003e\u003cbr\u003eThe filters are rated MERV 15, equivalent to MPR 2800, which captures very small particulates and improves indoor air quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the same as a nominal 5 in filter?\u003c\/strong\u003e\u003cbr\u003eIt is sold as a traditional 5 filter but the actual depth is 4 3\/8 in, so confirm your housing accepts that depth before buying.\u003c\/p\u003e","brand":"Nordic Pure","offers":[{"title":"Default Title","offer_id":48191945703643,"sku":"B01N9NLUK6","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/8187CGOHIXL._AC_SL1500.jpg?v=1770308685","url":"https:\/\/gearmusthave.com\/products\/nordic-pure-20x25x5-lennox-replacement-merv-15-air-filters-4-pack","provider":"GearMustHave","version":"1.0","type":"link"}