Standard Rectangular Hvac Duct Sizes

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.

Standard rectangular hvac duct sizes.

Master flow 16 in. Sheet metal connectors inc. All ductwork comes standard with stiffening beads. Galvanized steel flat sheet can be cut to size for a tough hvac job that requires a customized fitting.

The following duct sizes are based on a fraction drop of 10 inches per 100 feet of lineal duct. The master flow 36 in. Smc tdc slip drive and raw sheet metal connectors inc. For screen reader problems with this website please call 1 800 430 3376 or text 38698 standard carrier rates apply to.

Larger volumes or higher static pressures should be dealt with on an individual job basis. Rectangular or square ducting comes in standard sizes ranging from 3 by 7 inches to 35 by 40 inches. Rectangular duct and fittings are one part of our complete line of hvac products. For 375 duct size the equivalent diameter inches will be about 16x6.

Smc manufactures coil line ductwork in 4 5 6 lengths. Sizing is based on airflow needs per cubic foot per minute as well as velocity. Equivalent diameter of rectangular ducts rectangular duct sizes chart helps you to find the size of duct with its corresponding inches.