This is the section that has the thermal mass and its design is responsible for the stability of the oven. If its over built it will take to long to get to temperature and will smoke like crazy until it gets up to temperature by the same token if it does not have enough thermal mass then it will not be stable enough and you will be challenged in trying to maintain constant temperature if it is just a thin shell oven or steel shell oven then you will also find that it will not hold temperature for any length of time.

The un-insulated oven is the most basic form of oven that we make as discussed on the domestic oven page the un insulated oven is the perfect oven for those people who are looking for a basic oven either for DIY self install or for anyone wanting to build a bespoke designed oven while still complying with the DEFRA smoke exempt criteria.