Grommet tops of dust collector filter bag means there is one sewing round grommet at the bag top. This kind of dust collector filter bag is made of woven polyester, usually in shaking type dust collector bag house.
Loop top of bag tapers means sewing one loop at the filter bag top. Normally the bag top is flat sewn, the bag top shape is taper, folding one end to become one loop.
Dust collector filter bags with tie straps means sewing additional two tie straps at the bag top, and the bag top is normally sewn flat, the bag bottom is open snap band.
