Looks pretty good. You might want to think about getting closer to the FB recommended open width of 20"for a 42" oven.
![Embarrassment](https://community.fornobravo.com/core/images/smilies/redface.png)
I am a little confounded on one point though - you note your opening is 20.25" high. Is that because you have 2 courses on the side before you start the arch?
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