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Rectangular Ducts - Dimensions

Commonly used metric dimensions for rectangular air ducts in ventilation systems.

Commonly used rectangular duct sizes in air handling ventilation systems:

Rectangular Ducts - Dimensions
Width
(mm)		Height (mm)
10015020025030040050060080010001200
200 1) 1) 2) 3) 3) 3) 3) 3) 3) 3) 3)
250 2) 2) 2) 2) 3) 3) 3) 3) 3) 3) 3)
300 1) 1) 1) 2) 2) 3) 3) 3) 3) 3) 3)
400 1) 1) 1) 2) 1) 2) 3) 3) 3) 3) 3)
500 3) 1) 1) 2) 1) 1) 2) 3) 3) 3) 3)
600 3) 1) 1) 2) 1) 1) 1) 2) 3) 3) 3)
800 3) 3) 1) 2) 1) 1) 1) 1) 2) 3) 3)
1000 3) 3) 3) 2) 1) 1) 1) 1) 1) 2) 3)
1200 3) 3) 3) 3) 1) 1) 1) 1) 1) 1) 2)
1400 3) 3) 3) 3) 3) 2) 2) 2) 2) 2) 2)
1600 3) 3) 3) 3) 3) 1) 1) 1) 1) 1) 1)
1800 3) 3) 3) 3) 3) 3) 2) 2) 2) 2) 2)
2000 3) 3) 3) 3) 3) 3) 3) 3) 1) 1) 1)

1) Preferred, 2) Acceptable, 3) Not common

Related Topics

  • Ventilation Systems

    Design of systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.

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