Rectangular Ducts
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Rectangular ducts are widely used in HVAC systems and have a rectangular or square cros...
Elbows
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An elbow is a commonly used fitting in spiral duct systems designed to change the airfl...
Spherical Diffusers / Ball Valves
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Spherical diffusers (or ball valves) are a type of ventilation outlet used for controll...
Reducers / Transitions
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A reducer (or transition) is a key fitting in spiral duct systems used to change the du...
Tees
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A tee is a commonly used fitting in spiral duct networks for splitting or connecting ai...
Crosses
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A cross is a commonly used fitting in spiral duct networks for splitting or combining a...
Boots / Take-offs
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A boot (or take-off) is a spiral duct fitting used to branch airflow from the main duct...