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Copyright 2011 I.E.L. Manufacturing Ltd. All rights reserved. Interlock logo is a Registered Trademark of I.E.L. Manufacturing Ltd. Cannot be combined with any other promotional offers or discounts. Offer valid for this promotion only. Discount cannot be applied to previous purchases. Minimum 8 Sq. purchase required for discount offered. Must purchase an Interlock Roofing System to qualify. Available only at time of purchase. Offer not valid if contract cancels.Offer expires Dec. 31, 2012. Interlock and Alunar logos are Registered Trademarks of I.E.L. Manufacturing Ltd. TEFLON® is a registered Trademark of E.I. du Pont de Nemours and Company used under license. The ENERGY STAR name and the ENERGY STAR symbol are registered trademarks of the United States Environmental Protection Agency and are used with permission. When installed properly, this product will help reduce energy costs. Actual savings will vary based on geographic location and individual building characteristics. Consult your product manufacturer, roofing contractor, or call 1-888-STAR-YES (1-888-782-7937) for more information.