January 2013 – The U.S. Building Codes are revised every three years. Various states and jurisdictions could not adopt or be enforcing the latest versions of those constructing codes. Therma-Tru product approvals are up to date and revised as necessary to satisfy the changing constructing codes. Therma-Tru product approvals are additionally repeatedly improved or added to as new merchandise are launched. Furthermore, the mechanical mechanism on hinges is excluded from the limited warranty if the installation is within 5 miles of a body of salt water. For full info on the limited guarantee, visit our warranties page or contact your supplier, builder or contractor who put in or bought the product.