I almost ordered a 16" round pan but luckily realised it won't fit in my oven, by about 1/2". I would like to get a half round pan, but Fat Daddio's smallest looks like its 18". Shall I just get that and cut 1" off the edge when baked? Any other manufacturers you know of? I can only find this brand on GSA, which is where I am ordering from...
I like to order from cakepan4less.com
here is a link to their 1/2 pan page and they have 16"
http://www.cakepans4less.com/MISCELLANEOUS%20PAN.html
Many, many yrs ago I had 1/2 round pans 16" & 18" from Magic Line. Just a word of caution. The two 1/2s put together never made a perfect circle 
I had to cut a 1" strip to put in the middle so it was *almost* round. Otherwise I had an oval Not much help when you have to make an extra small sq cake just to fill out the round. Then you have extra cake going to waste
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