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    5 Products
    About Air Filter Efficiency Ratings
    industrial info icon

    Compare MERV rating, efficiency, and particle size to find the right filter for your location—from warehouses and offices to hospitals and labs.

    ULPA Box Air Filters

    Image of Product. Front orientation. Air Filters. ULPA Box Air Filters.
    Purify the air in your most sensitive environments. Since ULPA filters remove 99.999% of particles, they're used in semiconductor, pharmaceutical, and aerospace facilities. Constructed with fibers more densely woven than HEPA filters, they catch 10 times more particles. However, they need to be changed more often because they collect contaminants more quickly.
    HVAC Filter
    Trade Size
    Max. Temp.,
    ° F
    Specs.
    Met
    Each
    11 1/2" Thick
    12 × 12180UL 90000000000000000
    24 × 12180UL 9000000000000000
    24 × 18180UL 9000000000000000
    24 × 24180UL 9000000000000000
    24 × 30180UL 9000000000000000
     
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