How many of the FB insulating boards do you need for a Pompeii style oven?

The boards are 24x36 - so I suspect I'll need 3. Is that correct?

How many of the blankets do you need to cover the oven?

Thx.

The boards are 24x36 - so I suspect I'll need 3. Is that correct?

How many of the blankets do you need to cover the oven?

Thx.

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