Both Atem HEPA replacement filters contain the same particle filtration efficiency.

When it comes to particulate filtration, such as viruses and allergens, the performance will be the same.
However, the Atem Car contains gas-phase filtration for gas and odors that the Atem Desk does not contain.
Therefore, if gas and odors are a serious concern for the customer, then they should get the Atem Car replacement filter set.

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