"BestAir® is dedicated to providing a clean and comfortable indoor environment for everyone. We have a complete array of high-quality humidification wicks, air cleaning filters, and many other accessories, which will ensure that your indoor air quality will be the BestAir® that you and your family can breathe.This 16x20x4 furnace filter from BestAir eliminates many unwanted particles including dust mite debris, mold spores and pet dander while allowing cleaner air to flow through. Our pleated design assists in trapping up to 79% of airborne particles from 0.3 to 10.0 microns. With a Minimum Efficiency Reporting Value (MERV) of 8, this provides you with a good filtration system. Fits the models shown below as well as other 16x25x4 furnace cabinets.Fits Honeywell Air Cleaner Models: F100B1008, F100F1004, F100F2028, F200E1003. Compatible with Honeywell Air Filter Replacement Models: CF200A1620, FC100A1003, FC200E1003, POPUP1620