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How To Contact Us

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Please click on the subject below to route your request or question to the appropriate customer service representative. Crestline will make every effort to respond within 72 hours. Please be sure to fill out the form(s) as completely as possible. The more complete information Crestline has, the more quickly we will be able to take care of your request.

I would like to request service

Window Identification and Service Information Form

I would like to order a part

Optout form


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Corporate Information

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Crestline Windows and Doors
P.O. Box 309
Medford, WI 54451

Customer Service: 1-800-826-5509

The Crestline Customer Service toll free number can be busy at times while our representatives are assisting other customers. We recommend contacting us using the e-mail requests listed above. It allows our representatives time to fully review and understand your request so they can respond in the most efficient manner.

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