MASTER FLOW VENTILATION PRODUCTS LIMITED WARRANTY ® Congratulations! Thank you for purchasing a GAF Master Flow® Ventilation Product (the “Vent”). While many factors can affect how long your Vent will last, this GAF Master Flow® Ventilation Products Limited Warranty covers your Vent in the unlikely event that it contains a manufacturing defect. Note: This limited warranty does not cover other GAF Products on your roof. Please go to gaf.com for a copy of the limited warranties covering these products.
