Project Overview
Projects Completed
Welcome To 3SIX Js
Expert Window And Door Installation
At 3Six Js Windows and Doors Company, we specialize in professional window and door installation in homes throughout IL Counties, Lake County, McHenry County, DuPage County, AND Wisconsin counties, Jefferson County, Racine County, Kenosha County, and Walworth County. Our expert team works with a wide range of materials, including vinyl delivering top-tier energy efficiency, enhanced security, and modern aesthetics. Whether you’re upgrading for better insulation, curb appeal, or long-term durability, we provide customized solutions to meet your needs.
Free Measurement
We provide free, no-obligation measurements to ensure every project starts with accuracy. Our team takes the guesswork out, giving you a precise and honest estimate upfront.
Committed To Work
We are deeply committed to delivering top-tier workmanship in every window and door installation. Our passion for quality ensures your home improvement project is handled with care and professionalism.
We Production Best Window and Door
We produce high-quality windows and doors built to last.
Why Choose Us
Why You Choose Our Services
Our Services
Explore Our Service
Ready to Upgrade Your Windows and Doors?
- Quick installation
- Free measurement
- 5 Years Warranty
- Modern Design
Contact Us
+1 224-447-4175
Testimonials
What Customer Says About Us
Homeowner
"From the free measurement to the final install, everything was seamless and professional. You can tell they take pride in their work — highly recommended!"
Homeowner
"I couldn’t be happier with my new front door. It looks amazing and adds so much curb appeal. Plus, the 5-year warranty gives me real peace of mind."
Project Manager
Upgrade Your Home with Premium Windows & Doors
Our Blog
Latest Blog & Articles
The Importance of Regular Window Maintenance
Windows are an essential part of your home, providing natural light, ventilation, and a view of the outside world....
How to Choose the Right Door for Your Home
Choosing the perfect door for your home goes beyond just picking a design that looks good. Your door is...
Top 5 Benefits of Upgrading Your Windows and Doors
Are your windows and doors looking outdated or not performing as well as they used to? Upgrading to new,...
"The team at 3SIX Js did an outstanding job replacing all the windows in our home. The installation was quick, clean, and the results exceeded our expectations!"