Before investing in a hob, carefully measure the width of your slab space and the hob’s compatibility with the size of your chimney as these 2 factors play a crucial role in hob selection.
For example, a 90cm hob with a 60cm chimney will not be compatible as the extraction of smoke will not be efficiently done by the chimney. The hobs’ flames &fumes would go beyond width of the chimney.
Measuring these parameters in advance, therefore, can help avoid space-related and other issues later on.