It has less specific weight,big flux, low pressure, ,corrosion attack ModelD*H (mm)Stackn(m3)Specific Surface Areaa(m2/m3)Void volumeε(%)Bulk densityrp(kg/ m3) remark5050*508000101.040.9465Material:PP,Super PP,PVC,CPVC7676*764500920.945516100100*1001850750.9548