Patent ID: 8070862

Claim:
A product comprising: a dust collection device in fluid communication with a dust exit port of a sanding tool comprising a bag having a sidewall and a coupler attached to the bag; the sidewall comprising a first filter layer, a second filter layer, and an outer support layer that is air permeable; the first filter layer comprising a plurality of fibers forming a nonwoven web, the first filter layer having a total pressure drop between about 0.1 to about 4.0 mm H 2 O, and the first filter layer having a total basis weight between about 50 to about 450 gram/m 2 ; and the second filter layer comprising a melt blown microfiber nonwoven web, the second filter layer having a total pressure drop between about 5.5 to about 20.0 mm H 2 O, and the second filter layer having a total basis weight between about 15 to about 75 grams/m 2 ; wherein the first filter layer, the second filter layer, and the outer support layer are positioned in a face to face relationship forming a composite sidewall material; and the dust collection device comprises a seam on three sides of the bag.