One Way Aluminum Insulvent I

SKU: 157025

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PRODUCT DESCRIPTION

The spun heavy gauge aluminum (.051") Insulvent is a low cost method for venting all types of insulation. Insulvent I offers a special one-way silicone rubber valve to prevent moisture from re-entering the roofing system. Flange may be primed. Overall height 8-1/2", Base opening 4", Flange diameter 10-3/4". Recommended spacing: 1 per 1000 sq. ft.
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