Winix's Size 21 Odor Control Carbon Pre-Filters feature activated carbon to remove household odors, hair, lint and other large particles. Helps to extend the life of the HEPA filter and reduce housekeeping.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
