Reading A Duct Size Callout
Building it rotated (12x24) so it doesn't fit the space
Green / Field Check1stBatch 4
What This Helps With
Building it rotated (12x24) so it doesn't fit the space
Apprentice words: duct size
Trade terms: duct size callout, width x height, WxH
Check First
Which dimension is width vs height and the airflow direction
What Not To Do
Assume the bigger number is always horizontal
What can go wrong: Flipping W and H
Better Foreman Question
Is 24x12 width-first here, and which way is airflow?
Verify With
Reference type: project drawings
Source to verify: Plan reading; foreman/office convention
Safe wording: State the common W×H convention but note plans/offices can differ.