Serving La Salle, Peru and the entire Illinois valley area

300 2nd Street La Salle, IL

Koolmaster Co Inc | Il
Vinyl windows Windows

We've been serving the area since 1954. Trust our years of experience when you choose us for your next project.

Replacement & New Construction Windows

For all your window needs, call Koolmaster Co Inc. We're a full-service glass shop that can accommodate any size you require for replacement or new window installations. Our customer service is second to none, ensuring that you are completely satisfied with both our products and our services.


In addition to the manufacturer warranties that come with our selection of windows, we also offer our very own warranty on our workmanship to be doubly sure that you're satisfied. We also offer our products for wholesale for DIYers and local contractors.

  • Vinyl replacement windows by Provia

  • Wood windows by WeatherSheild

  • Variety of colors and styles

  • Professional Installation Available

Give us a call today for a FREE estimate.



Complete Window Services