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Your cart is empty.The Ductulator - Duct Sizing Calculator is a hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective sleeve with ASHRAE recommended design air velocities for system components/applications.
Leo Pascale
Reviewed in the United States on January 16, 2025
came in perfect condition
Bruce A.
Reviewed in the United States on May 13, 2024
Like everything about it. After watching a few YouTube videos I've got enough understanding to at least question people quoting my project.
Aaron Roth
Reviewed in the United States on December 5, 2024
Works great
Customer
Reviewed in the United States on October 13, 2024
Good quality, laminated and easy to use. Colors are crisp and clear. I’m a mechanical engineer and this is handy
Joe C.
Reviewed in the United States on February 17, 2023
Awesome Ductulator works as a Ductulator should easy to read and moves great now I can size my duct correctly
Tina Millwood
Reviewed in the United States on December 6, 2023
Good quality
Edward Warren
Reviewed in the United States on August 21, 2022
Simple to use and very accurate
Michael
Reviewed in the United States on December 15, 2022
arrived in good condition
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