When fabricating the Air Medic+ Adjustable Size Filters, in which direction does the air flow go?
It doesn’t matter which direction the air flow arrow is pointing when you first place the label on the filter frame. Initially, the filter is bi-directional so it won’t matter which face side is installed. However, once the filter has been used and cleaned, replace the filter back into the unit in the same direction, so you won’t unload any dust that may not have been cleaned from the filter.
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