Drawing sheet format used by SolidWorks, a 2D/3D design program; may be a blank sheet or may contain logos, notes, and links to properties; often includes lines used for the border of the drawing.
Program(s) that open slddrt files
Windows: Dassault Systemes SolidWorks
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/slddrt
