... .1, 0.2, 0.45, 0.65, 0.85, 1, 3, 5, 10, 20 mu mFilter length 250 mm (10 ' '254 ... (20' '508 mm), 750 mm (30' '762 mm), 1000 mm (40' '1016 mm)Filter area of 0.5 M2 (10 ' '), 1 ... .0 M2 (20 ' '), 1.5 M2 (30 ' '), 2.0 M2 (40 '")3. Filter socket have flat crush, insert, card into the type ...