About Us

Tri State Custom Windows was originally established in 2001 by Eli Hershberger in Fennimore, WI. After being mentored by Eli and learning the value of Amish handcrafted windows, my brother and I relocated the business to Dodgeville, WI.

We manufacture all of our vinyl windows by hand at our shop in Dodgeville and provide a 20 year warranty. We specialize in a wide range of windows including double-hung, slider and picture windows. We also have casement, basement, shapes, awnings, and stained glass church windows. Our vinyl windows are custom made to fit most sizes and shapes and can be made for new construction or replacement depending on what you need. Our windows are recognized by Energy Star and the NFRC as energy efficient.

As a family owned and operated business, we take pride in our customer service. Our job is not only to make and install the most durable and dependable windows, but to ensure you and your family’s satisfaction for years to come. As our customer, you can be assured that we are only a phone call away and will always be there to provide you with the best service possible.


Kelby & Kerby Thomas

Kelby and Kerby with Windows

Photos From The Shop

Groups we support

Big Brothers, Big Sisters of Dane County

Seniors United For Nutrition



Pancreatic Cancer Action Network

Pancreatic Cancer Action Network


The national organization creating hope in a comprehensive way through research, patient support, community outreach and advocacy for a cure.



Iowa County Humane Society

Iowa County Humane Society


Iowa Coutny Humane Society

The Iowa County Humane Society is a non-profit, no kill shelter. It runs 100% on donations. Please consider a donation to continue to help animals!


128_506194791538_1389_n Our black lab, Lexi