# U-value calculation windows
With the module U-value of Infissoft you are able to perform a detailed U-value calculation of your windows from the Klaes software. windows from the Klaes software. The external tool can be called up via the quantity list printout and can be individually configured for the for the needs of the end customer. A modern report generator allows for the rapid creation of user-defined forms for printing.
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Here is a sample printout: