On the A pre filter, I notice one side's surface seems slightly denser and slightly stiffer than the surface on the flip side. Does this affect air flow and does it matter if one surface or the other directly faces the HEPA? null

Question

ManufacturerTechSupport · Accepted Answer

Thank you for your inquiry. It does not matter how you place the pre-filter in the unit, its orientation will not have an effect of the performance of the air purifier. If you have any other questions please do not hesitate to contact our consumer relations team by emailing us at [email protected]. Thank you.

Answered by ManufacturerTechSupport 3 years ago

MrReviewItAll · Answer

There's a faint arrow letting you know what direction to place in 1st in the perimeter of the filter

“On the A pre filter, I notice one side's surface seems slightly denser and slightly stiffer than the surface on the flip side. Does this affect air flow and does it matter if one surface or the other directly faces the HEPA?”

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