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    Over the years, KAS Windows LLC, based in Mattoon, IL and Champaign, IL, has installed more than 50,000 windows and earned the trust of numerous customers. From window installation and window replacement to gutter services and siding services, we offer a range of services. We also offer free estimates. Take a look at the gallery to know more about our work.


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    We use products from the top manufacturers - Alside and Polaris. Our company has 32 years of combined experience. Get in touch with our window services company today.