... ) 4).High flux filter bag.(#1,#2,#3, ) 5).Oil absorbed filter bag.(#1,#2,#3, ) 6).High efficiency filter bag.(#1,#2,#3 ... , ) 7).Activated carbon filter bag.(#1,#2,#3 ... (Size 2) #3 (Size 3) #4 (Size 4) #5 ( Plastic Housing) C: PRE(PP ring of Eaton style ) PRF(PP ring ...