Fits only models with a bag dock: XL7, XL21, 2000, 3000, 4000, 8000, and 9000 series. 3 Layer, 630 cubic inch capacity with Celoc Hypo-allergenic filtering system. Saniseal automatic closing dust seal to keep dust in the bag. Antimicrobial protection that inhibits the growth of bacteria, mold, and mildew that can cause odors on the paper. Includes: 8 disposable ( professional size ) Hypo-allergenic filter bags.