Duct size by airflow and run length
Quick answer
Which duct diameter suits a given extraction rate, and what the run costs you. There are 24 tables in this set, each one worked through for a specific combination.
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50 CFM through a 5 foot run
At 50 CFM, a 3 inch duct gives about 1019 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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50 CFM through a 10 foot run
At 50 CFM, a 3 inch duct gives about 1019 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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50 CFM through a 20 foot run
At 50 CFM, a 3 inch duct gives about 1019 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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50 CFM through a 30 foot run
At 50 CFM, a 3 inch duct gives about 1019 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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75 CFM through a 5 foot run
At 75 CFM, a 3 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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75 CFM through a 10 foot run
At 75 CFM, a 3 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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75 CFM through a 20 foot run
At 75 CFM, a 3 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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75 CFM through a 30 foot run
At 75 CFM, a 3 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without set...
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100 CFM through a 5 foot run
At 100 CFM, a 4 inch duct gives about 1146 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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100 CFM through a 10 foot run
At 100 CFM, a 4 inch duct gives about 1146 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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100 CFM through a 20 foot run
At 100 CFM, a 4 inch duct gives about 1146 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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100 CFM through a 30 foot run
At 100 CFM, a 4 inch duct gives about 1146 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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150 CFM through a 5 foot run
At 150 CFM, a 4 inch duct gives about 1719 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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150 CFM through a 10 foot run
At 150 CFM, a 4 inch duct gives about 1719 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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150 CFM through a 20 foot run
At 150 CFM, a 4 inch duct gives about 1719 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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150 CFM through a 30 foot run
At 150 CFM, a 4 inch duct gives about 1719 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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200 CFM through a 5 foot run
At 200 CFM, a 5 inch duct gives about 1467 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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200 CFM through a 10 foot run
At 200 CFM, a 5 inch duct gives about 1467 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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200 CFM through a 20 foot run
At 200 CFM, a 5 inch duct gives about 1467 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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200 CFM through a 30 foot run
At 200 CFM, a 5 inch duct gives about 1467 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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300 CFM through a 5 foot run
At 300 CFM, a 6 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
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300 CFM through a 10 foot run
At 300 CFM, a 6 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
- Laser
300 CFM through a 20 foot run
At 300 CFM, a 6 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...
- Laser
300 CFM through a 30 foot run
At 300 CFM, a 6 inch duct gives about 1528 feet per minute, which sits inside the 1,000 to 2,000 fpm band that carries smoke without se...