Each product contains the filter, plus an additional replacement filter
Air purifier + Replacement filter

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Kilo+Replacement Filter
$132.99 $119.99 Translation missing: zh-CN.products.general.save_html
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Miro Pro 2-IN-1 Air Purifier & Humidifier + Replacement Filter
$201.99 $171.99 Translation missing: zh-CN.products.general.save_html