We do not have a download file for the latest version (15.2.2038), but you can try downloading it from the developer's site
Download version 15.1 from Software Informer
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The file is clean, see the report.
Version: 15.1 (x86)
Date update: Jun 28, 2015
File name: infragistics_20151_platforminstaller.zip
Size: 5.5 MB