Custom Window Supply Inc


About us

As your local Milgard Certified Dealer, we are proud to help you create the home you and your family deserve. Custom Window Supply specializes in new construction & replacement windows. We offer a full line of Milgard products including aluminum, vinyl, wood and fiberglass windows. Office Hours 7-8 am & 1:30-5 pm. Call for an appointment

Areas Served

Modesto, San Joaquin County, Calaveras County, Stanislaus County, Stockton, Tracy, Manteca, Ripon, Ceres, Turlock, Copperopolis

Consumer Experience Rating

To earn the AAMA Certified Diamond, the dealer must have an employee on staff that has completed the AAMA Installation Masters training and passed the AAMA Certified Installer test.


650 Glass Lane
Modesto, CA 95356
United States




Monday 1:30pm - 5:00pm
Tuesday 1:30pm - 5:00pm
Wednesday 1:30pm - 5:00pm
Thursday 1:30pm - 5:00pm
Friday 1:30pm - 5:00pm
Saturday Closed
Sunday Closed


Free estimates
New construction
Offers installation

The information shown on this page is provided by your local Milgard Certified Dealer which is responsible for the content of and views expressed on this page. Milgard is not responsible for the accuracy of such content, and any views expressed do not necessarily represent the views of Milgard Windows & Doors.

For full dealer information and product availability, please contact your local Milgard Certified Dealer.