McMaster-Carr logo
    Filter by
    Filter Type
    Filter Efficiency @ 0.3 Microns
    System of Measurement
    Thickness
    Filter Efficiency
    For Removing
    Removes Particle Size Down To
    Frame Material
    For Use With
    Frame Finish
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Application
    Filtering Method
    Specifications Met
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Maximum Temperature
    Construction
    Reusable
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    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
     
    back to top