Cor-a-vent® that information doesn’t always end up in the hands of the person designing the /. How proper ventilation effects your home. ridge vent versus roof vent comparison.. Cobra® rigid vent 3™ exhaust vent is a key part of the gaf lifetime roofing system, and has even earned the prestigious good housekeeping seal..

Cobra® rigid vent 3™ exhaust vent is a key part of the gaf lifetime roofing system, and has even earned the prestigious good housekeeping seal..

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Diy chatroom home improvement forum > home improvement > roofing/siding: low-slope ventilation - cobra fascia vent and cor-a-vent roof-2-wall vent. - - low-slope ventilation - cobra fascia vent and cor-a-vent roof-2-wall vent (http://www.diychatroom.com/f9/low-slope-ventilation-cobra-fascia-vent-cor-vent-roof-2. Re: shed roof ridge vent wow, i bet to make those ridgevents in copper you're going to pay over $100 a running foot (at least here in the bay area i know we'd pay that)..