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Appendix: Ridge Vent/Soffit Vent Calculator for Standard ...

Once attic square footage is known, divide by 150 (for the 1/150 ratio). That determines the total amount of net free area needed to properly ventilate the attic. Calculation: 3. Determine the amount of intake and exhaust ... enclosed rafter spaces formed where ceilings are …

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  Attic, Rafter

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Transcription of Appendix: Ridge Vent/Soffit Vent Calculator for Standard ...

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