Reticulated polyester open cell foam is mainly used as air filters in automotive. The reticulated polyester foam comes in various PPIs (pores per inch) from 10ppi to 110ppi. The sizes can be customized as per end customer’s requirement. PPIs (Pores Pen Inch): 10ppi, 20ppi, 30ppi, 45ppi, 60ppi, 70ppi, 80ppi, 90ppi, 100ppi & 110ppi