8 Oval Duct Dimensions

The rectangular dimensions and the air flow volume are adapted to the equal friction loss.

8 oval duct dimensions.

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. Duct system sizes and airflow quick chart created date. 51208000lq variation drop down size. Flat oval duct fitting sizes standard sizes available for 4 through 30 minor axis minor axis 4 6 8 10 12 14 16 18 20 22 24 26 28 30 10 12 11 nominal 13 12 11 major 15 14 13 axis 17 15 14 13.

In order to maintain velocity reduce duct size. Last take off run to be located 12 18 from end. 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. 19 available minor axis unlimited sizes available in longitudinal seam construction major axis sizes shown below are rounded off to the nearest whole number per industry standard.

Cfm 4 6 8 10 12 duct inches cfm 50 6 x 4 550 75 6 x 4 675 100 8 x 4 6 x 6 6 100 125 10 x 4 6 x 6 7 125 150 10 x 4 8 x 6 7 150 175 12 x 4 8 x 6 8 175. The table below can be used to compare equivalent diameters for rectangular and round circular ducts. Converts a rectangular size to the appropriate round size or the available esm flat oval size. 576 flat oval spiral duct sizes more than any other spiral duct manufacturer in the world.

The table is based on the ducts friction loss formula. Never locate ducts at the end of the trunk line run. 8 oval start collar with crimp 30 gauge duct fitting model number. Actual size gives the true duct major axis including.