Marathon Prevent PVC Vent is a premium large capacity PVC roof vent for pressure and moisture relief of roofing systems. It is ideal for use with quality heat weldable PVC membranes to provide a secure flashing attachment. This roof vent is available in a one-way or two-way style and offers over 80 square inches of venting area per unit.
- Exclusive one-way valve design to prevent moisture from re-entering the roof system
- Special insect resistant wire screen standard
- Strong cap permanently attached - vandal proof
- Pre-drilled flange for fastening to roof deck
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