Ondura 44 in. Polyethylene Foam Round Closure Strip 708

For use with the Ondura Corrugated Asphalt Roofing System. Vented closure strips are used to close off Ondura s corrugations while providing additional ventilation. Allows surface airflow between the corrugations when additional ventilation is desired. Recommended when applying Ondura over existing roofing (installed at the eave and ridge). Do not use when a watertight seal is required such as in valleys. Do not use with Ridgeline ridge vent. 44 long. 4-pieces per package. WARNING: This product can expose you to chemicals including bitumen which are known to the state of California to cause cancer. For more information go to: www.P65Warnings.ca.gov -.