Please contact our service department at 800-969-8830 between 10am and 5pm CST. You can also go to our website at ntwindow.com at click on the knowledge center, then warranty to fill out the service form. Someone will respond within one business day. You can send photos, order information and your contact information in that form. There also should be a label on the operating sash of windows that open, you can grab that information as well as it will have all of the information we need for warranty information. Kind regards, NT Window Customer Care
Call or swing by monday-friday 8a-5p
Call n t in ft worth
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