Outperforms all other filter materials. Filters better and lasts much longer. Bonded Filter Pads are porous and resilient enough to inhibit matting and allow filtration of all sizes of particulate matter. Bonded Filter Pads guarantee at least twice the filtering effectiveness and life of any ordinary material. The entire thickness remains effective. This Bonded Filter Pad can be cut to the exact size of any filter. Never too much or too little.