* Must place order for Windows no later than October 31, 2020. Qualifying Window Projects receive buy 1 get one 40% off on Anderson 100 series Fibrex windows. Products installed can be combined with other types and styles. Some exclusions apply. Inquire with a Project Manager for more details. Minnetonka Construction is a Certified Contractor for Andersen Windows. Serving the Twin Cities west metro area of Minnesota.