The hottest surface is the rear wall of the appliance, which can reach over 120°C, but just a few centimetres away from the wall (hence the spacer at the rear of the appliance) is enough to ensure that tiles or wallpaper are not affected. The great advantage of air is that only little heat energy can be stored and the heat energy is also very poorly conducted - for this reason you can also hold your hand 5 cm away from the housing of the BG 1805/E without (literally) burning your fingers. Within 15 cm ‘’air gap‘’ (e.g. upwards towards the wall cupboard) the air cools down massively and as the usual kitchen furniture coatings and materials such as melamine, Resopal, HPL coatings in general, even water-soluble paints and all the synthetic resins etc., can withstand temperatures of over 80°C, the air cools down very quickly. can withstand temperatures of over 80°C, the real risk is minimal. From a purely legal point of view (product liability), however, we have to specify generous safety distances in the operating instructions so that - if all unfavourable eventualities and coincidences occur - maximum safety is still guaranteed.
There is no need to worry about the oven itself, it is equipped with double temperature protection, even prolonged operation (beyond standard applications such as ‘20 minutes for a pizza’) will not cause the oven to overheat and should air congestion occur (even laterally despite the ventilation slits), the BG 1805/E will switch off in good time so that it is not damaged.