Pizza oven entry sizes

[MarkJerling]

You're most welcome Pooch.

[Poochdog12]

Thanks mark.

[MarkJerling]

I believe it refers to the inner arch.

[Poochdog12]

Just wandering if someone can offer me some info on the entry into my oven I’m building in a trailer.. I understand that the entry has to be 63% of the oven height, is this the arch with the flu ( opening) or the second arch which is against the dome??