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ADI Ductulator – Duct Size Calculator

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$16.48 Why this price?
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Availability: In Stock.
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Arrives Friday, May 15
Order within 9 hours and 24 minutes
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Features

  • The ADI Ductulator was created by the Air Distribution Institute based on research conducted by a prestigous university to study the effect of compression in flexible duct on air flow efficiency.
  • The data provided on the ADI Ductulator shows research data obtained with flexible duct compressed 4%, 15% and 30% in length. These compressions, and others, were studied because flexible duct is typically not installed fully stretched and the resulting installation causes greater pressure loss and is far less efficient in air flow distribution.
  • Typical installations are not in a straight line on a flat surface. The kinks, bends, sharp turns and sags of the typical installation increase pressure loss even more than represented by the ADI Ductulators data.
  • Using the ADI Ductulator will help you choose the correct size flexible duct to overcome any adverse effects on pressure loss due to the compression and achieve proper CFM and FPM air flow.
  • Along with the duct size calculator found on the front of the ADI Ductulator, youll find charts with commonly used fittings and other connectors on the back.

Description

The ADI - Air Distribution Institute, was formed in 1947 to promote the use of fabricated steel duct pipe and fittings for air distribution products. Today the alliance of ADI member companies produce steel duct pipe and fittings designed to efficiently deliver conditioned air in your home and office. ADI sponsors independent third party research to accurately substantiate the superior benefits of Steel Air Distribution Systems. Get your ADI Ductulator today!

Manufacturer: ‎Air Distribution Institute


Product Dimensions: ‎11 x 8.5 x 0.1 inches


Item model number: ‎ADI-CAL


Color: ‎White


Included Components: ‎Card


Date First Available: February 24, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great tool for duct ordering
Exactly what you need in certain occasions
Reviewed in the United States on February 28, 2026 by Jose Serrano

  • Installation
I'm in school for HVAC and you never know which direction you want to go on the field, so I recommend getting it
Reviewed in the United States on November 30, 2025 by Randall Ephraim

  • El cumplimiento
Todo atiempo
Reviewed in the United States on October 12, 2025 by Carlos bello

  • Herramienta de HVAC
Súper buena herramienta y fácil de utilizar y necesaria para el trabajo de ductos de aire acondicionados,
Reviewed in the United States on August 15, 2025 by Anthony

  • Best Value
This is the most complete Duct Size Calculator available, other than the ASHRAE version. It gives equivalent sizes for any combination of CFM, Velocity and Friction Loss in Round and Rectangular Sheet Metal Duct as well as Flexible Duct at three different compression installations. It is also the only Duct Size Calculator approved for use in the Texas State HVAC License Exam. ... show more
Reviewed in the United States on March 3, 2025 by Chris Van Rite

  • Is the easiest duct calculator to use to take a test look no further this is the best one
This is the best product if you wanna get ready to take a Hvac test
Reviewed in the United States on October 22, 2025 by Amazon Customer

  • Great Duct Calculator
Best ductulator on the market!
Reviewed in the United States on February 26, 2025 by Megan

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