I have writing this in the hope someone may have come across a similar problem when they wanted to replace an oven but not have a new kitchen.
The AEG oven fits in an Alno Kitchen Cabinet and both were fitted at the same time (1990).
I think the AEG must be a slimline model, because all the ovens I have re-searched on-line require a bigger cabinet that what we have.
I have emailed AEG (NZ) but don't hold out much hope.
I don't really want to replace the whole kitchen because we need a new oven. We could go for an oven that sits on a bench top, but that is not ideal.
I have measured the cabinet space that the oven occupies and it is approximately: Width: 565, Depth: 550, Height: 595.
Even though the height is 595, the actual oven is 590 and the door must take up another 10 mm and the oven door does protrude outside the cabinet.
I am wanting a basic oven because we have found out with a lot of appliances, we don't use a fraction of the functions they provide.
On top of the oven cabinet is another shelf, on which we have put in a free standing microwave. The size of the space for the microwave looks to the same size as the oven cabinet space.