8 Inch Flexible Duct Cfm

Shr below 80 21º td high humidity 350 cfm ton shr 80 to 85 19º td ave.

8 inch flexible duct cfm.

8 18 20 9 10 12 flexible duct round metal pipe 750 1200 14 16 design airflow 50 85 125 1500 2000 180 240 325 525. A typical 3 ton hvac system needs a metal duct about 16 inches round to deliver 1300 cfm. 8 18 20 9 10 12 flexible duct round metal pipe 750 1200 14 16 design airflow 50 85 125 1500 2000 180 240 325 525. Hon guan 8 inch air duct 16 ft long black flexible ducting hvac ventilation air hose for grow tents dryer rooms kitchen 4 5 out of 5 stars 569 22 99 22.

Humidity 400 cfm ton shr above 85 17º td low humidity 450 cfm ton cfm total heat equation cfm btu hr 4 5 x h x acf sensible load 1 08 x td x acf friction rate used in duct calculators friction rate pressure drop is the available static pressure. The flex duct size may be different than the hard duct that runs to that room. Use the online duct calculator see references and calculate the needed flex duct size. 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.

The table below can be used to compare equivalent diameters for rectangular and round circular ducts. Click calculate and you will see the size of flex duct you need for that room. A cfm of 1220 requires a 12 inch duct flex using rigid 1350 cfm needs 16 inch duct. Select the duct type on the pull down menu.

New duct sizing chart xls author. 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. Information provided is to be used as a guideline only. 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.

Input the required cfm in the box below that. Could your information be wrong and the rating be airflow in feet per second. The table is based on the ducts friction loss formula. Duct system sizes and airflow quick chart created date.

Flexible duct work must be stretched tightly for maximum air flow. New duct sizing chart xls author. 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.