Three images showing different sizes of positive pressure air filters as well as positive pressure air filtration systems installed on trays.


Positive pressure air filtration occurs at the inlet side of a cooling fan, generally installed on a shelf, rack or individual mounting tray assembly. These filters prevent dust and debris from contaminating the cooling fan and electronics, which can shorten the operating life significantly. Additionally it helps keep the air plenums free of debris that can restrict cooling air flows. This helps maintain consistent cooling performance over time to make sure high value electronics isn’t unnecessarily stressed by reduced cooling flows. Filtration solutions meet fire standards for airborne equipment and are available in a variety of configurations to maximize filter life.