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There is no filter but it is designed so that you keep your window screen down while its installed so it will only be able to blow in what makes it past the window screen
Sorry, there was a problem. Please try again later.There is no replaceable filter.
Sorry, there was a problem. Please try again later.The Transom is a window fan, bringing in cooler outside air. It is not an air purifier. It does not have a filter to block pollen.
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