YES, Sarah you are right! I had the correct measurements on my prototype but I had major issues with all the photos on the post and blogger gave me fits deleting info when I tried to publish Saturday morning....anyways it is correct now! Well everything almost...the post's address somehow deleted the extra f in winterfest ...so I have updated the link on this thread.
I am happy with the corrected size for now it will hold an ATC as I had planned.
Many, many thanks Sarah

for letting me know and helping to troubleshoot the problem. Yay, now we know the other players will be working with "road tested" instructions.
....Jan