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


Groups we support

Pancreatic Cancer Action Network

Founded in 1999, the Pancreatic Cancer Action Network (PanCAN) is dedicated to fighting the world’s toughest cancer. In our urgent mission to save lives, we attack pancreatic cancer on all fronts: research, clinical initiatives, patient services and advocacy.

Tri State Custom Windows booth at a PCAN event. We held a raffle for a painted window in which the money was donated to the event.

Visit Pancreatic Cancer Action Networks website for more info

Big Brothers, Big Sisters of Dane County

 Since 1966, Big Brothers Big Sisters of Dane County has operated under the belief that inherent in every child is the ability to succeed and thrive in life. Big Brothers Big Sisters makes meaningful, monitored matches between adult volunteers (“Bigs”) and children (“Littles”), ages 6 through 18, in our Dane County community. We develop positive relationships that have a direct and lasting effect on the lives of young people.

Kelby and his little, Antonio.

Bring your little to work day!

Visit Big Brothers, Big Sisters of Dane County for more information.

Iowa County 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 helping animals!

Visit the Iowa County Humane Society to leare more