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Can overhead cigarette racks be added to an existing cigarette display

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Nicotine Tob Res 15 ( 5 ), 925 (2012)

While the most cost-effective designs are those with multiple filters, use of a single 4 MERV 13 filter is also highly effective (increased CADR by 123%) and may be more suitable for smaller areas with minimal floor space that cannot accommodate the multi-filter designs

If it's crumbling to dust, try misting it very lightly with a small spray bottle of distilled water and tossing it in a sealed bag