Standard Rectangular Hvac Duct Sizes

Smc tdc slip drive and raw sheet metal connectors inc. Here equivalent diameter of rectangular ducts are given from 60 to 3050. This equal friction method of duct sizing should be adequate for normal residential furnace heating and air conditioning applications.

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Standard rectangular hvac duct sizes.

Rectangular or square ducting comes in standard sizes ranging from 3 by 7 inches to 35 by 40 inches. Half section rectangular duct model rd16x8x48. For 375 duct size the equivalent diameter inches will be about 16x6. The master flow 36 in.

Smc manufactures coil line ductwork in 4 5 6 lengths. 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. Rectangular duct and fittings are one part of our complete line of hvac products.

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. Galvanized steel flat sheet can be cut to size for a tough hvac job that requires a customized fitting. All ductwork comes standard with stiffening beads.

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. The following duct sizes are based on a fraction drop of 10 inches per 100 feet of lineal duct. Larger volumes or higher static pressures should be dealt with on an individual job basis.