Originally Posted by pester

I am looking for a name of a pattern and where to find the dimensions to make it. It really simple pattern but I am so new to the quilting world I don't know what to call it. It just 3 rectangular strips sewn together to make a block. I'm trying to figure out how wide to make the strips(to account for the seam allowances so I end up with a square block out of three rectangles. Thanks.