Srv Hepa Filter (2 Pre-filter SACCGSFHP2

These are authentic components that are supplied by the original manufacturer for use with Broan and Nutone air quality systems. The purpose of these pre-filters is to provide an extra layer of filtration. They ensure that the air that goes through the unit is free of dust and other harmful contaminats. Unfortunately, over time they may wear out and get clogged eventually requiring a replacement to ensure best air quality. Note, this pack includes two durable pre-filters. Keep in mind the <a href="http://www.ereplacementparts.com/foam-filter-p-1849332.html" target=blank><u>#SV05689 Foam Filter</u></a> is sold separately.