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Duct Construction and Uses
Discussion in fabricating and use of products that move air including spiral pipe, duct board and typical sheet metal work.

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Old 02-01-2018, 10:14 AM
Bradleyc1982 Bradleyc1982 is offline
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Default Perforated sheet....

Hi all, this may have been covered all ready, but does anyone know how to calculate air pressure through perforated sheet, 27.5% and 50% free area? I have looked online but haven't been able to come up with much?? If it has been covered on the site already please could you point me in the right direction?

Any help welcome lol

Thanks in advance Bradley
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