{"product_id":"lennox-ceiling-cassette-mini-split-replacement-filter-21-1-4-x-22-1-4","title":"Lennox Ceiling Cassette Mini Split Replacement Filter — 21-1\/4\" x 22-1\/4\"","description":"\u003cp\u003eKeep your Lennox ceiling cassette mini split running clean and efficient with this direct-replacement air filter. Designed to fit select Lennox M33A and M33B series cassette indoor units, this filter maintains proper airflow, protects internal components, and supports air quality performance between service intervals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFilter Dimensions\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLength\u003c\/td\u003e\n      \u003ctd\u003e21-1\/4\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWidth\u003c\/td\u003e\n      \u003ctd\u003e22-1\/4\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible Lennox Ceiling Cassette Indoor Unit Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eM33A024S4-1P\u003c\/li\u003e\n  \u003cli\u003eM33A024S4-2P\u003c\/li\u003e\n  \u003cli\u003eM33A036S4-1P\u003c\/li\u003e\n  \u003cli\u003eM33A048S4-1P\u003c\/li\u003e\n  \u003cli\u003eM33B048S4-1P\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify filter dimensions against your existing filter before ordering — do not rely on model number alone\u003c\/li\u003e\n  \u003cli\u003eSold as a single filter\u003c\/li\u003e\n  \u003cli\u003eManufacturer warranty applies where applicable — see manufacturer documentation for details\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":48110702297329,"sku":"DFS-CAR-SF542-LNX","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2657\/5818\/files\/DFS-SF542.avif?v=1777477064","url":"https:\/\/hepafiltersales.com\/products\/lennox-ceiling-cassette-mini-split-replacement-filter-21-1-4-x-22-1-4","provider":"HEPAFilterSales.com","version":"1.0","type":"link"}