The standard dimensions of ducts and fittings range between 130 mm and 2500 mm for any side length.
Standard rectangular duct sizes mm.
Enter an internal duct size this must be limited to a maximum aspect ratio of 5 1 for the results to be valid the resulting vel ocity and pressure drop per unit length are displayed in the blue box.
Sizing is based on airflow needs per cubic foot per minute as well as velocity.
Maximum size of duct or pipe through steel joists k series joists and maximum size of ducts and pipes.
For 375 duct size the equivalent diameter inches will be about 16x6.
Equivalent diameter rectangular and circular hvac ducts equivalent diameter for rectangular and circular ducts air flows between 100 50000 cfm maximum size of duct or pipe through steel joists k series joists and maximum size of ducts and pipes.
Spiral ducts dimensions standard dimensions.
Rectangular 10 3750 400 1000 2000 the air tightness classes are specified in the table below.
Rectangular rectangular or square ducting comes in standard sizes ranging from 3 by 7 inches to 35 by 40 inches.
Here equivalent diameter of rectangular ducts are given from 60 to 3050.
Equivalent diameter of rectangular ducts rectangular duct sizes chart helps you to find the size of duct with its corresponding inches.