The HEPA filter is for with the 40V max XGT® Brushless Cordless 2 Quart HEPA Filter Backpack Dry Vacuum (GCV05) and 40V max XGT® Brushless Cordless 1/2 Gallon HEPA Filter Backpack Dry Dust Extractor, AWS® Capable (GCV06). The efficient HEPA filtration system captures 99.99% of particulates .3 microns and larger. It is washable and reusable for extended filter life. The filter housing allows for quick and easy filter changes.