I made a 17 inch pie tonight which is max for my oven.
I used a screen and a stone, but messed up by only checking the edge. The crust was a bit overdone...live and learn...and I will eat my mistakes

Pictures later
(http://img.photobucket.com/albums/v57/edgeco1/th_CIMG1314.jpg)
(http://img.photobucket.com/albums/v57/edgeco1/th_CIMG1316.jpg)
(http://img.photobucket.com/albums/v57/edgeco1/th_CIMG1315.jpg)
(http://img.photobucket.com/albums/v57/edgeco1/th_CIMG1316.jpg)
(http://img.photobucket.com/albums/v57/edgeco1/th_CIMG1317.jpg)