I use this grid to help me lay out my mat in Cricut Design Space so I can use up my scraps of paper. With the coloured lines I can see at a glance how big to cut my scraps.
This time it is an .svg file which you only need to resize according to instructions on the .pdf file that comes with it.
You can find the two files to download if you click here
One small point: if you want to keep loading up the same grid time and again, use the "save as" dialog and rename your project to avoid writing over your nice blank grid...