So what is an Air Duct Calculator (Ductulator)? MicroMetl has produced a high quality video demystifying it's purpose and functionality.

This handy little device allows you to size your new air duct, and better understand what to expect from existing duct work. A Ductulator helps you properly size your ducts, estimate air loss, find the round or rectangular duct equivalent, and determine velocity. It can prevent some costly errors and is great for engineers as well as field technicians.

This video is a must watch for everyone in the HVAC industry!