Cartridge Overbags prevent bridging and wedging of fibrous dusts.

In some applications, strands or fibrous dusts have a tendency to bridge across the filters, become wedged in the cartridge pleats and even stick to the media, making pulse cleaning difficult. Fiberglass, paper trim, seed processing, corn shelling and hay compacting are examples of this. In these cases, nylon overbags fitted over the cartridge filters prevent bridging and wedging while permitting the design air volume through the collector.