Norelco Air Purifier Carbon Pre-Filters

From AirFilters.com

AirFilters.com If you are looking for a way to have better air filtration for your air purifier, then what you need is a pre-filter. Pre-filters are specifically designed to remove large particulates that easily clog your air purifier filter. This helps keep your main filter more efficient and lasting longer. This particular product is a replacement filter for all Norelco room air purifiers that require a carbon pre-filter. It comes as a large, cut-to-fit sheet of activated carbon, which contains millions of tiny, highly absorbent pores for trapping tiny odor particles.