Free cfm duct chart printables
Every sheet below is a free PDF you can print at home or at school. Open a sheet to see what is on it, then download it — no sign-up needed.
Printable CFM Duct ChartRound duct CFM chart for smooth galvanized duct and standard air, with diameter rows and friction rate columns for quick reference.1 page · free PDF
Printable Duct Size Equivalent ChartLetter-size chart of rectangular to round duct equivalents with CFM at 0.08 and 0.10, using Huebscher equivalent diameter.1 page · free PDF
Printable CFM Duct Sizing CalculatorFill in CFM and friction rate to find round duct diameter and next-size velocity on a clean one-page duct sizing worksheet.1 page · free PDF
Printable CFM Duct Chart WorksheetRoom-by-room airflow worksheet with columns for room, heating/cooling load, CFM, duct size, register, and notes on one letter landscape page.1 page · free PDF4 files · PDF, XLSX, DOCX
Get every sheet: Duct Sizing Reference Pack
This sheet plus 3 more in one download, with the editable Excel and Word files. Printable round duct CFM chart at five friction rates, rectangular equivalents table, an Excel duct sizing calculator and a room-by-room airflow worksheet.
$3.00 USD, one-time 4 files · about $0.75 each
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