Atrix 730333 HEPA Replacement Filters for Express Office Vac

The Atrix 730333 two pack of HEPA replacement filters is for the Express series office vacuum. Each one quart HEPA filter is 99.97% efficient at 0.3 microns - capturing very fine dust, color toner, allergens, mold spores, ultra fine particulate, and much more. It includes three layers of 56 pleat media.  The three layers consist of one cellulose layer and two glass layers.