Originally Posted by muscrat
I found this site you might like: Addicted to Stamping
She has dimensions for envelopes of several sizes using the diagonal plate.
Sorry, I misunderstood. These would be envelope sizes. I was thinkiing you were using the Simply Scored diagonal score plate. The score lines for the gatefold are 2 1/8" and 6 3/8". The others are right, it's the same for Scor Pal and the MS board because the size of the paper is the same. You would cut your paper to 5 1/2 x 8 1/2 and score at those measurements for the gatefold.