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 BestAir MERV 13 furnace filter has a 16x25x4 frame and traps up to 99% of airborne particles from 0.3 to 10.0 microns in size. It helps filter out pet dander, dust mite debris, most smoke and other unhealthy particles. This item includes 3 furnace air filters. You should change your furnace filter like this one, every 6-12 months.Measures 16" x 25" x 4"; Actual Size: 15 3/4" x 24 3/4" x 4 1/4"This furnace filter fits Honeywell: F100B1016, F100F1012, F100F1038, F100F2002, F100F2010, F200E1029,CF100A1009, CF100A1041, CF200A1008, FC100A1029, FC200E1029, POPUP1625, CF100A1041, 203719, F35/35R FC35A1001, F100/150 FC100A1026/1029, F200 FC200E1029, 203719