APF-21 Holmes Foam Air Purifier Pre-Filter

Most people are unaware of the harmful effects of indoor air pollution, but it is increasingly becoming a problem. This is because most buildings today are constructed with heavy insulation in order to conserve energy. This might be energy efficient, but it causes poor ventilation, which leads to the accumulation of indoor air pollutants. Breathing these pollutants can cause or worsen allergies, asthma, sinuses, and other breathing problems. Air purifiers vastly improve air quality, for they remove air contaminates like dust mites, mold spores, pet dander, pollen, tobacco smoke, etc. However, because they remove so many particulates, air purifiers become clogged very easily and have trouble filtering as they should. To avoid this problem, you need an air purifier pre-filter.

This particular product is the APF-21 Holmes foam pre-filter. It is designed to fit Holmes models HAP242 and HAP243 and measures approximately 3 3/4" x 11 3/4" x 3/8". Its foam design allows it to trap large airborne particulates that clog a filter so easily; it removes dust particles, pollen grains, pet dander, dirt, debris, etc. This keeps your main filter working more efficiently and lasting longer. At such a great price, this is a great buy for better filtration! Order today!