... water,air,dust filtering. 3.Different colors and shapes. 1.Filter foam: Reticulated and open cell 2.It is widely used in ... water,air,dust filtering. 3.Different colors and shapes. Reticulated foam, open cellIt is widely used in auto filtering, ... water filtering, air filtering, dust filtering and other filtering business.The polyurethane reticulated foam has different mesh(5ppi--90ppi), with high ...