You will receive 2 envelope files - one square and one rectangle with the fancy cut work on the flap.
The ZIP download will include FCM-MTC-SCAL-SVG and WPC files for use with your Electronic Cutting Machine.
Using 12 x 12 paper, you can get a 6 x 8.5 inch rectangle envelope or a 7 x 7 inch square, and resize to anything smaller to fit your project.
You can resize within your software/machine limitations.
Please be sure your cutting software program will open/import one of the files before purchase.