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WebA slant roof ventilator comprising a flat base to be disposed substantially in the plane of a slant roof and having a central substantially rectangular opening to register with a corresponding ventilating opening in the roof, a hood for said opening disposed to protect the same from weather elements and providing a free air passage therefrom to ... WebAug 11, 2024 · Exact rates depend on the type, size, and number of units you choose to install, and you can pay anywhere from $150 to $2,000. Ridge vents cost $2 to $3 per … lewis and clark quilt blocks
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