Learn Center - Can a 4" duct pipe be used on a bath fan with a 3" duct connector?

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Can a 4" duct pipe be used on a bath fan with a 3" duct connector?

Can a 4" duct pipe be used on a bath fan with a 3" duct connector?

2015-02-08 12:24:36 AM

Yes, however a 3" to 4" adapter is required.

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