Maximum Duct Length Calculator

Parameters- Input values in yellow boxes


Please select a Design Flow Rate to display your results.


0 ft
"NL" = No limit on duct length for the specified system.
"X" = Specified system is not likely to achieve the design flow. Please vary the inputs to identify a compliant system.
Static Pressure (in w.g.) Air Flow (cfm) Design Conditions: X cfm, Y in w.g.