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