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Welcome to CalcuDUCT - the quick and easy way to size ducts for any HVAC application.

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Circular

Rectangular

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Duct

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The calcuDUCT website is intended to provide design assistance only. The creator of calcuDUCT takes no responsibility for the accuracy of the results. Before using the results, the user should verify against another reliable method. Refer to the terms of use for more information.

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