This is a brand new microwave which we bought for our new kitchen but it didn't fit!   It is still in original packaging ( although we did take it out of box to try for fit).

Dimensions (HxWxD) (cm) - 38.2 x 49.5 x 33.5

Cost new was £399 but is now on sale for £347 from online retailers.

Note that it has to be installed by qualified electrician/engineer.

Here is the full spec: https://www.bosch-home.co.uk/product-list/cooking-baking/microwaves/built-in-microwaves/BFL523MS3B#/Tabs=section-technical-overview/Togglebox=accessoriesOthers/Togglebox=manuals/

Collect in person from G44 (Kings Park, Glasgow)