Printable Ductwork Trunk Reduction Worksheet
This one-page Letter worksheet is for HVAC installers, duct designers, and techs who need a simple trunk reduction layout. It includes columns for Section, CFM in section, Round size, Rectangular size, and Velocity.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 48 KB
Free for personal, family and classroom use.
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Fill in each trunk section as airflow changes, then compare the duct sizes and velocity at each point. Use it during layout, takeoff, or field checks to keep reduction steps organized.
Good for
- Track airflow changes through trunk sections
- Record round and rectangular duct sizes
- Check velocity at each reduction point
Tip: Print it and keep a ruler handy so size notes stay clear and easy to read.
4 files · XLSX, PDF, DOCX
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This sheet plus 3 more in one download, with the editable Excel and Word files. Excel room-by-room duct sizing workbook, a printable duct schedule, a trunk reduction worksheet and a duct installation checklist.
$3.00 USD, one-time 4 files · about $0.75 each
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