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“What does the pre-filter in this GermGuardian filter do?”

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Genuine HEPA Pure Replacement Filter M for GermGuardian Air Purifier Models AC4700BDLX and AC4700DLX - Black/White-Front_Standard

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The pre-filter helps to reduce common odors from things like pets, smoking, and cooking.
This answer was generated by AI based on customer and product data.