There are original ducts from the air-intake in the lazarette to the engine compartment, which lead the combustion air for the engine . There is no exhaust for the warm air in the cabinet. But it´s true, the tools on the shelf get a little bit heated, so we don´t store any electric devices on the shelf, and we don´t have an access hole for the extinguisher, but a stationary extinguishing system (fitted by previous owner).