Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: I am making a wedding cake, with the largest tier measuring 12in around. Will it fit in this caddy?
Document: We got married in September 2013 and our cake topper was in the freezer just wrapped in a lot of plastic wrap. I had been looking for a container like this that sealed for a long time but all were way overpriced. This sealable cake server fit the bill and will now keep our wedding cake its absolute freshest until it is time to thaw it out and enjoy it on our one year anniversary this September:)
Very convenient, easy to carry the cake around besides good storage. I would highly recommend it. Contrary to other reviews I think the size is adequateExcellent product
My wife LOVES this. She is big into cake making and this has worked out very well for taking cakes to events, parties, and her school. It has been easy to clean and is definitely large enough.
I could not fit a 6&#34; high cake under this without it touching the frosting on the top. I had to tape cardboard to the edge to lift the lid up higher and then plastic wrap the rim. Otherwise, it's grear!
The Cake holder is great! I made a 3 layer cake (9&#34; cake) and it holds it with no problem. If I made a 4 layer cake, it would also hold it with no issues. There's plenty of room still in regards spacing above and around. The clasps on both ends actually holds it tight and haven't had any problems with the latch unclasping. Very happy with this cake carrier.
My friend and I make tall cakes, use Ecco pans and a box of mix per pan. Needed tall cake keeper and this one fits the  bill. Top locks on to bottom making transportation of the cake from Kitchen to party destination easy. Good for kids parties at school, holds a lot of cupcakes, a pie, whatever you want to protect and stay fresh.
It's an adequate cake taker. Quite large, impractical to put into our small apartment fridge, which I didn't expect; on the plus side, it could fit a 3-layer cake for certain, maybe even 4-layer. The top is slightly domed, which makes it impossible to rest anything on top of it, again a downside for refrigerating cakes.
So either I remove one shelf from my fridge in order to accomodate the server or else I keep it on the kitchen counter when possible. As a cake carrier it's great, large enough to fit 10 in. cakes with frosting. The usable space on the plate is 12 in. I will keep looking for a less bulky keeper I can put in my fridge.
I like the server just fine and was just what i expected . I do think it is too pricey for the quality as compared to other servers I have seen after making this purchase.
I'm happy with this purchase. I must admit that when I first saw it, I expected it to be taller, however, after comparing it to the carrier I already have, it IS taller AND wider! I can't fit a 10&#34; cake in my old one without messing up the sides with the dome. With this  new one, I can place a 10&#34; and have plenty of room ..... no worries. I'm a happy camper.
Answer: the measurements given for this carrier are accurate, however, it measures the entire base including the dam that holds the top. You would easily hold an 11" cake provided there is not a lot of decoration, but there is no way a 12" would fit. Other than that, it is a very good carrier and I would highly recommend it otherwise.  I hope this helped you in your decision.