{"product_id":"b0b1g56ttw","title":"Aerostar 21x21x1 MERV 11 - 6 Count - Pleated HVAC, Furnace \u0026 Air Conditioner Filters - Removes Dust, Cold \u0026 Flu Germs, Lint, Mold, Pet Dander, Allergy-Causing Pollen, Smog \u0026 Smoke","description":"\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e  \u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e Nominal size: 21x21x1; Actual size: 20.875\" x 20.875\" x 0.75\"; This MERV 11 filter is comparable with MPR 1000-1200 \u0026amp; FPR 7  \u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, and smoke  \u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months  \u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e 100% synthetic electrostatic media for high efficiency with low air flow resistance  \u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier \u0026amp; more productive  \u003c\/span\u003e\u003c\/li\u003e  \u003c\/ul\u003e   \u003cbr\u003e","brand":"Aerostar","offers":[{"title":"Default Title","offer_id":44158493098070,"sku":null,"price":160.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6471\/0742\/files\/51Ym0scBBFL._AC.jpg?v=1773287366","url":"https:\/\/www.matildaco.com\/products\/b0b1g56ttw","provider":"Matilda Co","version":"1.0","type":"link"}