Serving La Salle, Peru and the entire Illinois valley area

300 2nd Street La Salle, IL

Koolmaster Co Inc | Il Doors

We've been providing top-quality service to your friends and neighbors since 1954!

Energy-Efficient Doors for a Variety of Purposes

Keep the heat, cold, and weather outside and your climate-controlled air inside with quality entrance and storm doors available at Koolmaster Co Inc. You can choose from a large variety of doors by top manufacturers, including Provia and Therma TRU.


Whether you're a contractor, DIYer, or a homeowner, we can help you find the door that's just right for your needs, in the color and style you want. We can even help with the installation! Put our years of experience to work on your next home improvement project.

  • Entrance doors by Provia and Therma TRU

  • Storm doors by Provia

  • Prefinishing available in a variety of colors

  • Fiberglass, steel, and aluminum doors

  • Installation available

  • Wholesale options for contractors and DIYers

  • Interior doors available by Woodport

Give us a call today for a FREE estimate.



Door options including: