Mechanical · IMC 2021 §603

HVAC Duct Sizing

Duct sizing requirements based on CFM, velocity, and friction loss. Referenced to IMC 2021 §603.

The full text is for BuildSpec members

Read the complete section, search across every adopted code, run the calculators and ask Copilot — free for 14 days, no card required.

  • The annotated detail diagram with dimension callouts
  • The code section it illustrates, in full
  • Related diagrams in the same category
  • Download and insert into a project
Start your free 14-day trialSign in