Step 2 enter in the value for the diameter of the round.
Rectangular to round duct transition calculator.
Converting a rectangle to round sheet metal duct work is something that is common in hvac.
Friction loss calculator for sheet metal ducts.
Transition elbow offset box wedge.
With some careful planning this is something you can do yourself.
Multiply this number by 3 14 pi to get the area of the round duct in square inches for example 16 x 3 14 50 24 square inches.
Step 1 use a square or rectangle to round transition calculator.
Other hart cooley mobile tools.
This opened the door for the use of sheet metal for ducting.
Round use a slightly smaller diameter for less crimping or to finish.
The equivalent diameter is the diameter of a circular duct or pipe that gives the same pressure loss as an equivalent rectangular duct or pipe.
Step 5 select a size of square duct that has the same area.
Friction loss calculator for flexible ducts.
The rectangular dimensions and the air flow volume are adapted to the equal friction loss.
The table below can be used to compare equivalent diameters for rectangular and round circular ducts.
Square to round calculator.
This can be found by multiplying the two adjacent sides of the rectangular duct.
Remember to add if bending the lower scrape in or out upper diameter.