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Uploaded by dmcatRCR on Jan 17, 2009
From www.roofingcontractorreview.com/ ventilation of roof and attic space. Passive or "stack" / "chimney" effect with gable and roof vents.
Education
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Nice ill., thats one hot house!!
Manning713 2 years ago
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Nice ill., thats one hot house!!
Manning713 2 years ago