Equivalent diameter rectangular and circular hvac ducts equivalent diameter for rectangular and circular ducts air flows between 100 50000 cfm.
Hvac rectangular duct sizes.
22 1 4 x 47 1 2 x 36.
24 1 4 x 29 1 2 x 36.
Commonly used rectangular duct sizes in air handling ventilation systems.
24 1 4 x 27 1 4 x 36.
Rect duct product pages.
Sheet metal connectors inc.
Duct size chart calculate duct dimensions for both rectangular and round ducts.
Larger volumes or higher static pressures should be dealt with on an individual job basis.
24 x 30 x 36.
The hvac model that you re interested in should offer information regarding the maximum airflow per cubic foot per minute or cfm to help you determine adequate duct sizes.
Smc manufactures coil line ductwork in 4 5 6 lengths.
Rectangular or square ducting comes in standard sizes ranging from 3 by 7 inches to 35 by 40 inches.
140 0 063 4 x 8.
Residential duct sizing guide the following duct sizes are based on a fraction drop of 10 inches per 100 feet of lineal duct.
These duct chart are based on equal friction method with a friction loss value 0 1 inch 100ft.
Rectangular duct sizes inches mm x mm equivalent diameter round duct sizes d e inches mm velocity in equivalent round duct v ft min m s friction loss inh 2 o 100 ft duct pa 100m x x 80 0 04 3 x 7 4 x 5.
Sizing is based on airflow needs per cubic foot per minute as well as velocity.
Download free duct sizing chart pdf according to ashrae standard.
The professional team at hvac for life inc.
Design cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12 150 12x4 215 10x6 310 10x8 430 10x10 550 10x12 180 14x4 270 12x6 400 12x8 550 12x10 680 12x12 210 16x4 320 14x6 490 14x8 670 14x10 800 14x12 240 18x4 375 16x6 580 16x8 800 16x10 950 16x12 270 20x4 430 18x6 670 18x8 930 18x10 1100.
Here equivalent diameter of rectangular ducts are given from 60 to 3050.
100 0 045 4 x 6.
Smc tdc slip drive and raw sheet metal connectors inc.
Rectangular single wall duct ductwork fittings.
25 1 2 x 32 1 4 x 36.
This equal friction method of duct sizing should be adequate for normal residential furnace heating and air conditioning applications.
Rectangular duct sizes chart helps you to find the size of duct with its corresponding inches.
23 1 4 x 24 1 4 x 36.
Can fabricate all sheet metal products for all building applications.
120 0 05 4 x 7 5 x 6.