Example Application 1,880 CFM through 10 line to Model 25S(6)-10 4 Line 0.09 ft 2 350 CFM 6 Line 0.20 ft 2 785 CFM 5 Line 0.14 ft 2 545 CFM 3 Line 0.05 ft 2 200 CFM 1,880 CFM 0.47 ft 2 10 Line at 3,450 FPM 9 Line at 4,260 FPM