Mine measures about 18 1/2 x 19.
It's not really a true pattern Bettlove.
I started with a pattern, but it got all screwed up, so I pretty much tore it apart and made my own.
You are welcome to copy it.
The squares are about 4" each.
It started out to be the middle of a Mystery Quilt that was finished. By the time I got to the paper piecing part of it...no paper piecing in my square....I noticed the measurements were wrong.
It gave the dimensions to cut the squares, but on the template, it said that the fabric square measurements DID NOT allow for 1/4 inch seam.
What a dumb place to put that note, huh? So, needless to say, I have a bunch of pieces I will be doing something with later on, maybe.
I had found the pattern online. Don't know where I found it, since there were so many centers I was looking at, I don't even know where to start....sorry.