... thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on. ... 0.43710.9334572140005271 "25×25×0.52190.950255519403931 "25×25×0.62230.940268519404711.5 "38×38×0.61460.959165151803181.5 "38×38×0.81490.946176151804242 "50×50×0 ... ×1.5720.9518418303844 "100×100×1.8740.9655012003704 "100×100×2.0350.955531200371 Metal pall ring (Dia.5/8", 1", 1.5", 2", 3", ...