Google Fails Me

The Aga's ovens aren't very wide, but they're deep. And so I want a bread/pizza peel that I can use to take full advantage of them and put a large pizza or three loaves into the oven. That means that the blade needs to be 12" x 18", and I can't find any such thing on the Internet -- there are some things that size that call themselves pizza peels, but they're actually serving plates and don't have long handles. Does anyone know of such a thing (or have better Google-fu than me)?