This is a 2X12 that’s on my roof, the hole is only 2 inches in one direction but 3.75 inches in the other direction and the hole is slightly off… This is a 2X12 that’s on my roof, the hole is only 2 inches in one direction but 3.75 inches in the other direction and the hole is slightly off…Read MoreGreenBuildingAdvisor

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