No products are to be returned to the manufacturer, until there is an inspection and a return-goods authorization (RGA) number is issued. Restocking fees and freight fees may be incurred for returns. All returns should be directed to the attention of Customer Service Manager. All products are warranted to be free from defects in material and workmanship for a period of one year from the date of purchase, if installed and used in strict accordance with the installation instructions. Liability is limited to the sale price of any products proved to be defective or, at manufacturer’s option, to the replacement of such products upon their return.