Hualing provides replacement filter elements for Domnick Hunter's compressed air filters. Filtration rating: PF~AARFlow rate: 0.5~500NM3/min.K145 can reach 8.7 NM3/min.Flow rate NM3/minType 0,5K009*1K017*3,6K030*4,8K058*7,2K145*8,7K145*12K220*13,2K220*20K330*24K430*25,8K430*40K620** stands for grades of filter elements.