3 25 X 10 Duct Cfm

2000 cfm 0 94 m 3 s of air flows through a 10 x 12 inches rectangular duct.

3 25 x 10 duct cfm.

The length of the rectangular duct size would range from 0 7mm to 0 9mm galvanised mild steel depending on size. 7 round really now up to 150 cfm 8 round up to 200 cfm. Runouts to register boots. 1 inh 2 o 100 ft 84 mmh 2 o 100 m.

14 up to 11 10 el 12 to 21 15 el 22 to 27 20 el 28 to 33 25 el. 65 round to round 20 25 el duct elbows radius throat no. 1 in 25 4 mm. Due to larger circumference and more friction area related to air volume a circular duct is always more efficient than a rectangular duct.

Here is a table of duct sizes i use for residential projects using standard x 8 deep ductwork. Enter duct airflow cfm duct velocity fpm duct length and the number of bends. This also corresponds to a 3 25 x 10 inch stack duct by the way. Make shortcut to this calculator on your home screen.

Up to 100 cfm. Half section rectangular stack duct master flow s rectangular stack duct is used master flow s rectangular stack duct is used for hvac system applications between wall studs as supply and return ducts and to vent range hoods kitchen and bath fans between walls as well. 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. Duct testing code language air leakage testing code language 503 10 3 sealing.

Duct system sizes and airflow quick chart created date. Duct work is otherwise called as duct system. Over that i go rectangular. 6 round a minimum size for me.

Example air flow in rectangular vs. Sheet metal duct friction loss calculator. All ducts air handlers filter boxes and building cavities used as ducts shall be sealed. Blower cfm x room load equipment sizing load blower cfm equipment sizing load btu hour 1 08 x td x acf sensible load.