16x25x4 13 Pleated Air Filter 3PK | 15.5x24.5x3.625 - Actual Size

16x25x4 13 & Furnace Air Filters - Box of 3 Actual Size: 15.5 x 24.5 x 3.625 Air filters are ranked according to a minimum efficiency rating value () system. The higher the rating, the better the filter can filter out all airborne particulates. Since we are constantly trying to improve indoor air quality, it only makes sense that we would offer air conditioner filter 13. 16x25x4 13 filters are right on the cusp of being classified as �medium efficiency pleated air filters� and �high efficiency pleated air filters.� 16x25x4 furnace filter that has received a rating of 7�13 is about as effective as true filters at controlling a majority of airborne particles. This happens more effectively as the filter gets dirty. However, a 16x25x4 furnace filter with a rating of 13�16 removes and captures smaller particle sizes even before the filter starts to become dirty. With the first air exchange, 13 filters have over a 75% efficiency of removing airborne particulates that are between 0.3u and 1.0u in size. When the average particle size is 1.0u to 3.0U, the filters' efficiency jumps to over 90%! We are very proud that we now offer these great 16x25x4 13 filters for homes. Until recently, 13 air filters were commonly found in communication centers, telephone terminal rooms, biological laboratories, biomedical laboratories, chemistry laboratories, and physics laboratories. This means the 16x25x4 furnace filter should be selected based on the specific building location, occupancy, air quality issues and type and operation of the system. However, it is reasonable to specify that individuals buy a filter with a rating of at least 13 to maintain good indoor air quality in common types of spaces. 16x25x4 13 filters are pleated, electrostatically charged filters. The electrostatic charge of the filters works as a magnet to draw airborne particles to them. lot of schools are starting to implement 13 electrostatic air filters to help combat children�s respiratory infections and the effects of pollutants.